Testes: Structure and Function

The testes are part of the male reproductive system and are responsible for producing sperm and the hormone testosterone. They are located in the scrotum, which is a sac of skin that hangs below the penis.

Structure of the Testes

The testes are made up of tiny coiled tubes called seminiferous tubules, where sperm production occurs. These tubules are also interspersed with cells that produce testosterone. The testes are also surrounded by a tough outer covering called the tunica albuginea.

Function of the Testes

The primary function of the testes is to produce sperm through a process called spermatogenesis. This involves the division and maturation of germ cells within the seminiferous tubules. The testes also produce testosterone, which is responsible for the development of male secondary sexual characteristics such as facial hair, deepening of the voice, and muscle mass.

Study Guide

1. Where are the testes located in the male body?
2. What is the structure responsible for sperm production in the testes?
3. What is the function of testosterone in the male body?
4. What is the process of sperm production called?
5. What are the male secondary sexual characteristics influenced by testosterone?

Understanding the structure and function of the testes is important for comprehending the male reproductive system and human development. Studying this topic thoroughly will also help in grasping the concepts of genetics and inheritance.