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Question
Outline the role of the kidneys in the urinary system.Answer
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Related questions
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Vasopressin is produced by several specific neuronal cell bodies in the __________ and then stored in the posterior __________ gland.
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The plasma clearance rate of a substance filtered, but not reabsorbed or secreted, always equals the __________.
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The micturition reflex is initiated when stretch receptors within the urethra are stimulated.
a. True
b. False
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Although vasopressin promotes H2O conservation by the body, it cannot halt urine production.
a. True
b. False
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The plasma clearance rate for a secreted substance is always less than the glomerular filtration rate.
a. True
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Hydrogen ions are only secreted by the proximal tubules.
a. True
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Plasma protein concentration can become extremely high in diabetes mellitus, a digestive disorder involving inadequate insulin action.
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Intrinsic control of GFR, which is mediated by parasympathetic nervous system input to the efferent arterioles, is aimed at long-term regulation of arterial blood pressure.
a. True
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The loop of Henle forms a sharp U-shaped or hairpin loop that surrounds the renal cortex.
a. True
b. False
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What does micturition mean?
a. The process of bladder emptying or urination
b. The process of filtration through the glomerulus
c. The acidification of urine
d. The final filtration of urine
e. A urinary bacterial infection
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What happens when the hydrogen ion concentration in the body fluids is too low?
a. Oxygen absorption increases.
b. Hydrogen absorption increases.
c. Hydrogen absorption decreases.
d. Hydrogen secretion increases.
e. Hydrogen secretion decreases.
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The most prevalent ions secreted by the tubules are:
a. sodium and chloride
b. sodium and hydrogen
c. sodium and potassium
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The passive reabsorption of urea is indirectly linked to the active reabsorption of:
a. potassium
b. chloride
c. sodium
d. glucose
e. phosphorus
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How are glucose and amino acids reabsorbed in the proximal tubule?
a. primary passive transport
b. secondary passive transport
c. primary active transport
d. secondary active transport
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What are the two major control mechanisms that regulate the glomerular filtration rate (GFR)?
a. internal regulation and intrinsic parasympathetic control
b. autoregulation and intrinsic sympathetic control
c. internal regulation and extrinsic parasympathetic control
d. autoregulation and extrinsic sympathetic control
e. external regulation and extrinsic parasympathetic control
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The major inspiratory musclesthe muscles that contract to accomplish an inspiration during quiet breathinginclude the __________ and __________ intercostal muscles.
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The lungs' elastic behavior results from elastin fibers and alveolar surface tension.
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Beyond the larynx, the trachea divides into two main branches, the right and left bronchi.
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d. bronchioles
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Generation of respiratory rhythm is now known to lie in the:
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b. pneumotaxic center
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