Question

Describe the structure and function of the testes, (human reproductive system) explaining the importance of their location on the scrotum.

Answer 1

Testes is part of male reproductive system. Testes is plural form. Male reproductive system contains 2 testicles which produce sperm (male reproductive cell).

Structure: As per human anatomy, the testes occur as a pair of oval-shaped organs and are located within the scrotal sac. Testicles weighs about 25 grams and 4 to 5 cms long. Each testicle covered by capsule called tunica albuginea which is divided into many lobes. Those lobes contains seminiferous tubules which produce sperm cells.  

These seminiferous tubules contains germ cells that differentiate into mature spermatozoa. The supporting cells are called as Sertoli cells, and testosterone-producing cells are called as Leydig cells. The paired testicular arteries supplies blood from the abdominal aorta which descend through the inguinal canal. The rest of the external genitalia is supplied by the internal pudendal artery.

Function: 2 testicles produce sperm (male reproductive cell). Testicles also produce hormones called androgens. These hormones plays a n important role in growth of male reproductive system.

Importance of location: Testicles location is in scrotal sac which is outside of body. The main reason is body temperature is not suitable for sperm formation.The sperm development is most suitable in the cooler temperature. so scrotal sac is located outside of body and supports the sperm production.