Stimuli for the activation of the RAAS pathway include
A) low blood pressure in arterioles in the nephron only.
B) a decrease in fluid flow through the distal tubule only.
C) high blood pressure in the renal artery only.
D) low blood pressure in arterioles in the nephron and a decrease in fluid flow through the distal tubule.
E) low blood pressure in arterioles in the nephron, a decrease in fluid flow through the distal tubule, and high blood pressure in the renal artery.
23) Angiotensin II
A) stimulates thirst only.
B) causes widespread vasoconstriction throughout the body only.
C) causes the synthesis and release of aldosterone from the adrenal cortex.
D) stimulates thirst and causes widespread vasoconstriction throughout the body.
E) stimulates thirst, causes widespread vasoconstriction throughout the body, and causes the synthesis and release of aldosterone from the adrenal cortex.
24) Which of the following is NOT true about angiotensin II?
A) increases cardiac output
B) activates parasympathetic output
C) is a potent vasoconstrictor
D) elevates blood pressure
E) stimulates thirst
25) Drugs that treat hypertension by preventing Angiotensin I from becoming Angiotensin II are called
A) ACE inhibitors.
B) beta blockers.
C) calcium channel blockers.
A) is secreted in response to elevated levels of sodium in the blood.
B) promotes sodium retention in the kidneys.
C) helps decrease blood volume.
D) increases the concentration of sodium in urine.
E) functions in pH regulation.
27) Atrial natriuretic peptide
A) increases the GFR.
B) inhibits the release of renin.
C) stimulates the release of renin.
D) increases the GFR and inhibits the release of renin.
E) increases the GFR and stimulates the release of renin.
28) An increase in plasma potassium levels is properly called
29) Excess potassium ions are eliminated from the body by the
A) sweat glands.
D) digestive system.
30) Thirst is
A) controlled by centers in the hypothalamus.
B) triggered by increased osmolarity.
C) relieved only when plasma osmolarity is decreased.
D) controlled by centers in the hypothalamus and triggered by increased osmolarity.
E) controlled by centers in the hypothalamus, triggered by increased osmolarity, and relieved only when plasma osmolarity is decreased.
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