Testicle
Testicle
A testicle, also called testis (pl. testes) is the male gonad in all gonochoric animals, including humans, and is homologous to the ovary, which is the female gonad. Its primary functions are the production of sperm and the secretion of androgens, primarily testosterone.
The release of testosterone is regulated by luteinizing hormone (LH) from the anterior pituitary gland. Sperm production is controlled by follicle-stimulating hormone (FSH) from the anterior pituitary gland and by testosterone produced within the gonads.
Structure
Appearance
Male humans have two testicles of similar size contained within the scrotum, which is an extension of the abdominal wall.[1] Scrotal asymmetry, in which one testicle extends farther down into the scrotum than the other, is common. This is be...