PATHOLOGY

Detailed explanation-1: -Testosterone is the hormone that causes most of the changes in a guy’s body during puberty.

Detailed explanation-2: -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.

Detailed explanation-3: -Precise regulation of testicular function is conferred by an elegant feedback loop in which the secretion of pituitary gonadotropins is stimulated by gonadotropin hormone-releasing hormone (GnRH) from the hypothalamus and modulated by testicular hormones.