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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.


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View Related questions

Correct Answer is B

Explanation

A. Glomerular capillaries are involved in the filtration of blood to form the glomerular filtrate, not in the reabsorption of glucose and amino acids.

B. Proximal convoluted tubule is where the majority of glucose and amino acids are reabsorbed from the glomerular filtrate back into the bloodstream.

C. Renal corpuscle consists of the glomerulus and Bowman's capsule and is involved in the filtration process, not in reabsorption.

D. Distal convoluted tubule is involved in the fine-tuning of electrolyte and acid-base balance, not in the primary reabsorption of glucose and amino acids.

Correct Answer is A

Explanation

A. K+: Potassium (K+) is the most abundant cation in the intracellular fluid (ICF). This is the correct answer.

B. Ca2+: Calcium (Ca2+) is not the most abundant cation in the ICF; it is found in lower concentrations within cells compared to potassium.

C. Cl-: Chloride (Cl-) is the most abundant anion in the extracellular fluid (ECF), not in the intracellular fluid.

D. Na: Sodium (Na) is the most abundant cation in the extracellular fluid (ECF), not in the intracellular fluid.

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