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Cards In This Set
| Front | Back |
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The loops of Henle are considered to function as a countercurrent multiplier because
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As urine flows in the loop, a concentration gradient is established in the medulla
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What factors would decrease the glomerular filtration rate?
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An obstruction such as a kidney stone in the tubular system, which increases Bowman's capsule hydrostatic pressure
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Aldosterone:
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A. stimulates Na+ reabsorption in the distal and collecting tubules
b. stimulates K+ secretion in the distal tubule |
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Vasopressin:
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A. induces the kidneys to produce a small volume of concentrated urine
b. is stimulated when the body fluids are hypertonic |
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The descending limb of the loop of Henle of a juxtamedullary nephron:
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Is permeable to water
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The ascending limb of the loop of Henle is where..
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NaCl is actively transported into the interstitial fluid, leaving water behind because the tubular cells are not permeable to water
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True / False
In the tubular segments permeable to water, solute reabsorption is always accompanied by comparable water reabsorption. |
True
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T / F
The driving force for water reabsorption across all permeable segments of the kidney tubule is an osmotic gradient |
True
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Function of saliva
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A. facilitates swallowing
b. serves as a solvent for molecules that stimulate taste buds c. has antibacterial action |
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D cells secrete..
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Somatostain
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Secretin is released by endocrine cells in the duodenal mucosa in response to:
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Acid in the duodenum
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The formation of a lipid emulsion:
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A. facilitates digestion of fat by lipase
b. is accomplished by bile salts |
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The primary site of absorption in the digestive system is the mouth
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Small intestine
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T / F
Bile is continuously secreted by the gall bladder |
False
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Dehydroepiandrosterone (DHEA) is
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A. the most abundant adrenal androgen
b. responsible for the development and maintenance of the female sex drive |
