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Chapter 38. Regulation of Extracellular Fluid Composition & Volume

Dehydration increases the plasma concentration of all the following hormones except

A. vasopressin.

B. angiotensin II.

C. aldosterone.

D. norepinephrine.

E. atrial natriuretic peptide.

In a patient who has become dehydrated, body water should be replaced by intravenous infusion of

A. distilled water.

B. 0.9% sodium chloride solution.

C. 5% glucose solution.

D. hyperoncotic albumin.

E. 10% glucose solution.

Renin is secreted by

A. cells in the macula densa.

B. cells in the proximal tubules.

C. cells in the distal tubules.

D. granular cells in the juxtaglomerular apparatus.

E. cells in the peritubular capillary bed.

Erythropoietin is secreted by

A. cells in the macula densa.

B. cells in the proximal tubules.

C. cells in the distal tubules.

D. granular cells in the juxtaglomerular apparatus.

E. cells in the peritubular capillary bed.

When a woman who has been on a low-sodium diet for 8 days is given an intravenous injection of captopril, a drug that inhibits angiotensin-converting enzyme, which of the following would be expected?

A. Blood pressure to rise because cardiac output would fall

B. Blood pressure to rise because peripheral resistance would fall

C. Blood pressure to fall because cardiac output would fall

D. Blood pressure to fall because peripheral resistance would fall

E. Plasma renin activity to fall because circulating angiotensin I level would rise

Which of the following would not be expected to increase renin secretion?

A. Administration of a drug that blocks angiotensin-converting enzyme

B. Administration of a drug that blocks AT1 receptors

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