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Water output is largely controlled by varying

A.

cutaneous transpiration

B.

drinking

C.

urine volume

D.

sweating

Answer and Explanation

The Correct Answer is C

A. Cutaneous transpiration: While cutaneous transpiration (evaporation of sweat from the skin) contributes to water loss, it is not the primary mechanism controlling water output.

 

B. Drinking: Drinking affects water intake rather than output. It does not directly control how much water is excreted from the body.

 

C. Urine volume: Urine volume is the primary means by which the body regulates water output. The kidneys adjust urine volume to maintain fluid balance and homeostasis.

 

D. Sweating: Sweating contributes to water loss but is not the primary mechanism for controlling overall water output compared to urine production.


View Related questions

Correct Answer is B

Explanation

A. Pyelitis is an infection of the renal pelvis and does not cause sweet-smelling urine.

B. Diabetes mellitus often causes glycosuria (glucose in urine), which can make urine taste sweet.

C. Renal calculus (kidney stones) does not affect urine sweetness.

D. Acute glomerulonephritis affects kidney function and urine appearance but does not specifically cause sweet-smelling urine.

Correct Answer is A

Explanation

A. Chief cells; hydrochloric acid (HCl); parietal cells: Pepsinogen is produced by chief cells, and it is activated into pepsin by hydrochloric acid (HCl) secreted by parietal cells.

B. Chief cells; carbonic anhydrase (CAH); parietal cells: Chief cells produce pepsinogen, but it is not activated by carbonic anhydrase. Instead, it is activated by HCl.

C. Parietal cells; carbonic anhydrase (CAH); chief cells: Pepsinogen is produced by chief cells, not parietal cells, and its activation involves HCl, not carbonic anhydrase.

D. Parietal cells; hydrochloric acid (HCl); chief cells: Pepsinogen is produced by chief cells, not parietal cells, and is activated by HCl.