GENERAL HISTOLOGY

Detailed explanation-1: -The testes synthesize two important products: testosterone, needed for the development and maintenance of many physiological functions; and sperm, needed for male fertility.

Detailed explanation-2: -They contain very fine-coiled tubes, called seminiferous tubules and are covered with tough membrane, tunica albuginea. Primary cell types in testes are germ cells, Sertoli cells which secrete inhibin, Leydig cells which produce and secrete androgens, peritubular hyoid cells, macrophages and epithelial cells.

Detailed explanation-3: -The testes have two functions – to produce sperm and to produce hormones, particularly testosterone. Sperm are produced in the seminiferous tubules of the testes.

Detailed explanation-4: -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). Sexual development occurs in a set sequence: Enlargement of the scrotum, and testes.

Detailed explanation-5: -The testes are known as gonads. Their female counterpart are the ovaries. In addition to their role in the male reproductive system, the testes also have the distinction of being an endocrine gland because they secrete testosterone-a hormone that is vital to the normal development of male physical characteristics.