GENERAL HISTOLOGY

Detailed explanation-1: -Follicle-stimulating hormone (plus testosterone) causes the testes to produce sperm. Testosterone is responsible for the development of secondary sex characteristics, features of male development (including characteristics that are not part of the reproductive system, such as facial hair growth and voice change).

Detailed explanation-2: -Three hormones are the principle regulators of the male reproductive system: follicle-stimulating hormone (FSH) stimulates spermatogenesis; luteinizing hormone (LH) stimulates the production of testosterone; and testosterone stimulates the development of male secondary sex characteristics and spermatogenesis.

Detailed explanation-3: -Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolescence, stimulates spermatogenesis. These secondary sex characteristics include a deepening of the voice, the growth of facial, axillary, and pubic hair, and the beginnings of the sex drive.

Detailed explanation-4: -Testosterone is the male sex hormone that is secreted by the testis. It helps in the development of secondary sexual characteristics, such as deeper voice and facial hair.