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Question
Which of these is an example of active transport?
A. Diffusion of oxygen from a place of high concentration to a place of lower concentration
B. Facilitated diffusion of K+
C. Transport of glucose down its concentration gradient
D. Transport of Na+ from a place of low concentration to a place of higher concentration
E. Transport of Cl- following its concentration gradient
Answer
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Related questions
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The sympathetic chain of ganglia is found at the __________ levels of the spinal cord.
A. cervical and thoracic
B. thoracic and lumbar
C. thoracic, lumbar and sacral
D. sacral, lumbar and coccygeal
E. cervical, thoracic, lumbar, sacral, and coccygeal
Q:
Sympathetic nerve fibers are not associated with situations involving __________.
A. anger
B. digestion
C. exercise
D. stress
E. arousal
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Which of the following statements is true regarding parasympathetic tone?
A. It holds the resting heart rate below its intrinsic rate.
B. It accelerates the resting heart rate above its intrinsic rate.
C. It might increase or decrease heart rate depending on the situation.
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Which of the following cranial nerves is mispaired?
A. Abducens - V
B. Oculomotor - III
C. Facial - VII
D. Accessory - XI
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Exhausted from studying all night, you briefly close your eyes and your mind starts to wander. Which brain waves would be most predominant in an EEG?
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B. Beta
C. Delta
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A. Dural sinus
B. Lateral ventricle
C. Central canal
D. Subarachnoid space
Q:
The pyramidal cells of the precentral gyrus are called __________ neurons.
A. stellate
B. third-order
C. first-order
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Which of the following is correct regarding the occipital lobe?
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B. It is the principal visual center of the brain.
C. It is the primary site for receiving and interpreting signals from the general senses.
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Planning, motivation, and social judgment are functions of the brain associated with which part of the cerebrum?
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B. Tegmentum in the midbrain
C. Cerebellum
D. Reticular formation
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The __________ function(s) in visual attention, such as to look and follow the flight of a butterfly.
A. inferior colliculi
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Which of the following is not a function of CSF?
A. To regulate the chemical environment of the nervous tissue
B. To rinse metabolic wastes from the nervous tissue
C. To provide oxygen and nutrients to the nervous tissue
D. To protect the brain from striking the cranium when the head is jolted
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Q:
From superficial to deep, the meninges occur in which order?
A. Dura mater, pia mater, arachnoid
B. Dura mater, arachnoid, pia mater
C. Pia mater, dura mater, arachnoid
D. Pia mater, arachnoid, dura mater
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Q:
Which of the following structures appears as a large bulge just rostral to the medulla?
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B. Diencephalon
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A. High altitude
B. Air pollution other than by carbon monoxide
C. Renal disease
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B. A diet predominantly based on red meat
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A normal hematocrit is __________ of the total blood volume.
A. less than 1%
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D. 42% to 45%
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C. action of phospholipase A2
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C. blood; kidneys
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A. Negative feedback inhibition
B. The antagonistic effect
C. Up-regulation
D. Enzyme amplification
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Q:
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A. G protein activates adenylate cyclase
B. cAMP activates protein kinases
C. Adenylate cyclase produces cAMP
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B. glucagon; raises
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D. insulin; raises
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. The __________ secrete(s) __________, which promotes Na+ and water retention.
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