Q&A Hero

Q: __________ relay signals between neurons.

Q: __________ neurons detect stimuli.

Q: __________ are electrically excitable cells that signal other cells by means of chemical messages.

Q: Respond to the following statements in reference to the five regions of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata This region connects to parasympathetic neurons that innervate the heart and lungs.

Q: Respond to the following statements in reference to the five regions of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata This region controls the complex coordination of motor activity and limb movement.

Q: Respond to the following statements in reference to the five regions of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata This region controls the autonomic division of the nervous system.

Q: Respond to the following statements in reference to the five regions of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata This region controls much of the endocrine system.

Q: Respond to the following statements in reference to the five regions of the vertebrate brain listed below. a. cerebrum b. hypothalamus c. pons d. cerebellum e. medulla oblongata This region contains the reflex centers involved in respiration.

Q: Respond to the following statements in reference to the autonomic nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal Sympathetic nerves from this region innervate the heart.

Q: Respond to the following statements in reference to the autonomic nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal Parasympathetic nerves from this region innervate the rectum.

Q: Respond to the following statements in reference to the autonomic nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal Sympathetic nerves from this region innervate the kidney.

Q: Respond to the following statements in reference to the autonomic nervous system associated with the five regions of the human spinal cord listed below. a. cervical b. thoracic c. lumbar d. sacral e. coccygeal Sympathetic nerves from this region innervate the bladder, uterus, and genitals.

Q: Respond to the following items in reference to the four cell types listed below. a. sensory neurons b. interneurons c. motor neurons d. Schwann cells Cells that pick up environmental signals

Q: Respond to the following items in reference to the four cell types listed below. a. sensory neurons b. interneurons c. motor neurons d. Schwann cells Cells that are restricted to the brain and spinal cord

Q: Respond to the following items in reference to the four cell types listed below. a. sensory neurons b. interneurons c. motor neurons d. Schwann cells Cells that form myelin

Q: Respond to the following items in reference to the four cell types listed below. a. sensory neurons b. interneurons c. motor neurons d. Schwann cells A type of neuroglia cell

Q: Respond to the following items in reference to the four cell types listed below. a. sensory neurons b. interneurons c. motor neurons d. Schwann cells Cells that carry signals to muscle cells

Q: White matter Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Neurotransmitter molecule Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Meninges Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Reticular formation Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Peripheral nervous system Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Nerve net Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Midbrain Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Medulla oblongata Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Limbic system Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Hypothalamus Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Ganglion Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Corpus callosum Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Cerebellum Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Frontal lobe Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Autonomic nervous system Choose the most appropriate answer. a. integrates body position, motions, balance b. in cnidarians; based on reflex pathways devoted to swimming and feeding c. messages from here arouse the brain and maintain wakefulness d. the cortical region that coordinates muscles required for speech e. all parts of nerve cells outside the brain and spinal cord f. acetylcholine is an example g. reflex control center for breathing, heart rate, and blood pressure h. axons of the central nervous system that are sheathed with fatty myelin i. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior j. motor neurons that are divided into sympathetic and parasympathetic divisions k. membrane coverings over brain spinal cord l. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing m. connects right and left cerebral hemispheres n. group of nerve cell bodies that form an integrative center o. contains centers concerned with body temperature regulation and with salt and water balance

Q: Neurotransmitter molecule Even though there may be more than one correct letter response to some numbered items, discriminate and "juggle" so that you have the one BEST response for each. a. cells that nurture and support neurons b. a hyperpolarizing event c. a neuron cannot propagate an action potential at this time d. Acetylcholine or GABA e. interneuron in brain or spinal cord f. establishes basis of resting membrane potential g. sheathed muscle cells that contain receptors h. input i. integrator cell between sensory and motor j. modified dendrite of a sensory neuron k. a depolarizing event l. output m. muscle or gland n. produced by a Schwann cell o. cluster of cell bodies outside the CNS

Q: Stimulus Even though there may be more than one correct letter response to some numbered items, discriminate and "juggle" so that you have the one BEST response for each. a. cells that nurture and support neurons b. a hyperpolarizing event c. a neuron cannot propagate an action potential at this time d. Acetylcholine or GABA e. interneuron in brain or spinal cord f. establishes basis of resting membrane potential g. sheathed muscle cells that contain receptors h. input i. integrator cell between sensory and motor j. modified dendrite of a sensory neuron k. a depolarizing event l. output m. muscle or gland n. produced by a Schwann cell o. cluster of cell bodies outside the CNS

Q: How does bipedalism relate to sweat glands, skin color and hair density?

Q: If you sweat, are you losing extracellular fluid or intracellular fluid?

Q: How does a pluripotent cell differ from a unipotent or totipotent cell?

Q: Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are looked upon as specialized __________ tissues.

Q: __________ secrete hormones into blood.

Q: __________ secrete products such as sweat or digestive enzymes through ducts.

Q: __________ increase the free surface area of epithelia that absorb substances.

Q: __________ cover the body surface, and line its internal spaces.

Q: __________ are open channels that connect the cytoplasm of abutting cells and permit rapid transfer of ions and small molecules between them.

Q: __________ hold neighboring cells together.

Q: __________ stop fluid from leaking across an epithelium.

Q: Labeling. Hair

Q: Labeling. Smooth muscle

Q: Labeling. Hypodermis

Q: Labeling. Hair follicle

Q: Labeling. Sweat gland

Q: Labeling. Epidermis

Q: Labeling. Oil gland

Q: Labeling. Blood vessels

Q: Labeling. Sensory neuron

Q: Labeling. Dermis

Q: Respond to the following statements with reference to the organ systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory Recovers excess tissue fluid

Q: Respond to the following statements with reference to the organ systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory Dstributes antibodies throughout the body

Q: Respond to the following statements with reference to the organ systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory Initially encounters airborne pathogens

Q: Respond to the following statements with reference to the organ systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory Involved in the immune response

Q: Respond to the following statements with reference to the organ systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory The first line of defense against infectious bacteria found in food

Q: Respond to the following statements with reference to the types of connective tissue listed below. a. loose connective tissue b. dense connective tissue c. adipose d. cartilage e. blood This tissue plays a particularly important role in the thermoregulation of many marine mammals.

Q: Respond to the following statements with reference to the types of connective tissue listed below. a. loose connective tissue b. dense connective tissue c. adipose d. cartilage e. blood This tissue provides nourishment to each of the other connective tissues.

Q: Respond to the following statements with reference to the types of connective tissue listed below. a. loose connective tissue b. dense connective tissue c. adipose d. cartilage e. blood This tissue plays an important role in stabilizing body temperature.

Q: Respond to the following statements with reference to the types of connective tissue listed below. a. loose connective tissue b. dense connective tissue c. adipose d. cartilage e. blood The elasticity of skin is due to the presence of this kind of tissue.

Q: Respond to the following statements with reference to the types of connective tissue listed below. a. loose connective tissue b. dense connective tissue c. adipose d. cartilage e. blood Tendons are composed of this.

Q: Epidermis Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Neuron Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Interstitial fluid Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Loose connective tissue Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Glandular epithelium Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Dense connective tissue Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Blood Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Adipose tissue Choose the one most appropriate response for each. a. ligaments and tendons are made of this b. contains collagen and elastin; acts as a packing material that supports internal organs c. receives, conducts, and initiates signals in response to environmental changes d. stores fat e. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms f. secretes extracellular products such as sweat, mucus, tears, and saliva g. fluid ground substance plus free cells; involved in transport, pH, and temperature stability h. extracellular fluid that bathes cells and tissues

Q: Homeostasis is ultimately regulated by: a. the brain. b. the endocrine glands. c. the oil glands. d. the exocrine glands. e. the circulatory system.

Q: Which of the following is not a response to rising body temperature? a. Increased rate of breathing. b. Decreased secretion of hormones that stimulate activity. c. More sweat. d. Blood flow to skin reduced. e. Increased rate of breathing.

Q: The letter "A" in the above figure is a. the epidermis. b. the sweat gland. c. the dermis. d. the hypodermis. e. none of the above.

Q: Which of the following components of the dermis is incorrectly matched with its usual function? a. blood vessels; nutrient supply b. sweat glands; hormone secretion c. oil glands; lubrication of hair and skin d. hairs; insulation e. receptors; pain

Q: Melanin protects the skin from a. desiccation. b. abrasion. c. ultraviolet radiation. d. infrared damage. e. invasion by bacteria.

Q: Which of the following is NOT found in the epidermis? a. stratified epithelium b. blood vessels c. adhering cell junctions d. keratin e. melanin

Q: The integumentary system is responsible for all EXCEPT which of the following? a. protection against bacterial attack b. protection against desiccation c. synthesis of a certain vitamin d. blood cell formation e. control of temperature