Action potentials are transmitted on a one-to-one basis at both a neuromuscular junction and a synapse.
Indicate whether the statement is true or false
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Question 2) Select the incorrect statement about ADH.
a. It is also called vasopressin.
b. It is not secreted if the body consumes large amounts of water.
c. It is produced by the distal convoluted tubule.
d. It is secreted if the body fluids become hypertonic.
e. It stimulates reabsorption of water.
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Question 3) Sympathetic preganglionic fibers originate in the thoracic and lumbar segments of the spinal cord.
Indicate whether the statement is true or false
(
Question 4) Which part of the juxtamedullary nephron is responsible for establishing the vertical osmotic gradient in the medulla of the kidney?
a. collecting duct
b. afferent arteriole
c. loop of Henle
d. juxtaglomerular apparatus
e. distal tubule
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Question 5) Only alpha adrenergic receptors have several subtypes denoted with subscripts 1 and 2.
Indicate whether the statement is true or false
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Question 6) The vertical osmotic gradient enables the kidneys to produce urine that ranges in concentration from 100 to mosm/liter to:
a. 300 mosm/liter.
b. 600 mosm/liter.
c. 900 mosm/liter.
d. 1,200 mosm/liter.
e. 1,500 mosm/liter.
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Question 7) The salivary glands and the eye are sympathetically innervated by cranial nerves.
Indicate whether the statement is true or false
(
Question 8) The ascending limb of the loop of Henle
a. actively transports NaCl into the surrounding interstitial fluid.
b. is impermeable to water.
c. is found in the renal cortex.
d. drains into the proximal convoluted tubule.
e. both (a) and (b) above.
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Question 9) The parasympathetic nervous system dominates in fight-or-flight situations.
Indicate whether the statement is true or false
(
Question 10) The descending limb of the loop of Henle is where
a. NaCl passively leaves the tubular fluid down its concentration gradient.
b. NaCl is actively transported into the interstitial fluid, leaving water behind because the tubular cells are not permeable to water.
c. K+ is secreted.
d. aldosterone stimulates Na+ reabsorption.
e. water is reabsorbed
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