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Which of the posterior pituitary hormones causes the kidneys to decrease its excretion of urine?

A.

ADH

B.

Oxytocin

C.

ACTH

D.

FSH

Answer and Explanation

The Correct Answer is A

A. ADH: Antidiuretic hormone promotes water reabsorption in the kidneys, reducing urine output.

B. Oxytocin: Stimulates uterine contractions and milk ejection; not related to urine regulation.

C. ACTH: Secreted by anterior pituitary; stimulates adrenal cortex, not kidneys.

D. FSH: Stimulates follicles in the ovaries; no effect on kidney function.


 


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Related Questions

Correct Answer is A

Explanation

A. Hypothyroidism / overweight: Hypothyroidism leads to slowed metabolism, fatigue, and weight gain.
B. Hyperglycemia / underweight: Hyperglycemia relates to blood glucose, not thyroid function.
C. Hypoglycemia / underweight: This describes low blood sugar, unrelated to thyroid activity.
D. Hyperthyroidism / overweight: Hyperthyroidism typically causes weight loss, not weight gain.

Correct Answer is D

Explanation

A. Over secretion of aldosterone: Aldosterone promotes water reabsorption, which reduces urine output.
B. Decreased GFR (glomerular filtration rate): This would lead to less urine formation, not polyuria.
C. Activation of angiotensinogen: This ultimately leads to water retention, not increased urination.
D. Deficiency of ADH: ADH (antidiuretic hormone) promotes water reabsorption. Its deficiency (as in diabetes insipidus) leads to excessive urine output.


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