MICROANATOMY

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: -The hormone responsible for developing secondary sexual characteristics in males is testosterone. It is synthesized and released from the testes.

Detailed explanation-3: -LH is transported in the blood stream to the testes, where it stimulates Leydig cells to produce testosterone: this can act as an androgen (via interaction with androgen receptors) but can also be aromatized to produce estrogens.