The Interstitial Endocrine Cells in the Testes Produce

Question

The interstitial endocrine cells in the testes produce
A) dihydrotestosterone.
B) androstenedione.
C) growth hormone.
D) progesterone.
E) testosterone.

Accepted Answer

Interstitial endocrine cells in the testes are also known as Leydig cells and they are responsible for producing and secreting testosterone. Therefore, option E is the correct answer. Options A, B, C, and D are incorrect as they are not produced by the interstitial endocrine cells in the testes. Dihydrotestosterone is produced by the conversion of testosterone by the enzyme 5-alpha-reductase. Androstenedione is mainly produced by the adrenal glands and to a lesser extent by the gonads. Growth hormone is produced by the anterior pituitary gland. Progesterone is mainly produced by the ovaries and to a lesser extent by the adrenal glands.