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Q.

Which of the following statements are correct with respect to the hormone and its function?
(A) Thyrocalcitonin (TCT) regulates the blood calcium level.
(B) In males, FSH and androgens regulate spermatogenesis.
(C) Hyperthyroidism can lead to goitre. 
(D) Glucocorticoids are secreted in adrenal medulla.
(E) Parathyroid hormone is regulated by circulating levels of sodium ions.
Choose the most appropriate answer from the options given below.

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a

(C) and (E) only

b

(A) and (B) only

c

(B) and (C) only

d

(A) and (D) only

answer is B.

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Detailed Solution

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A and B only

A. Thyrocalcitonin (TCT) lowers blood calcium level (hypocalcemic hormone). Along with parathormone (PTH), It regulates the blood calcium level.

B. FSH and androgens regulate spermatogenesis.

FSH stimulates the proliferation of spermatogonia, stimulates the release of androgen-binding protein (ABP) and stimulates of the secretion of other growth factors and proteins required for the maturation and development of sperm cells.

Androgens stimulates the division of spermatogonia and their differentiation into spermatocytes. They also stimulate the meiosis of spermatocytes.

C. Hypothyroidism often leads to goitre.

D. Glucocorticoids are secreted by the adrenal cortex.

E. The secretion of parathyroid hormone is regulated by the circulating levels of calcium ions.

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