Reproduction

Structures of the Male Reproductive System

• **Testes**: Produce sperm and the male sex hormone, testosterone.
• **Vas deferens**: Carries sperm from the testes to the urethra.
• **Seminal vesicles**: Produce a fluid that mixes with sperm to form semen.
• **Prostate gland**: Produces a fluid that also mixes with sperm to form semen.
• **Urethra**: Transports both urine and semen out of the body.

Functions of the Male Reproductive System

• **Sperm production**: The testes produce sperm through a process called spermatogenesis.
• **Testosterone production**: The testes also produce the male sex hormone, testosterone, which is responsible for the development of male secondary sexual characteristics.
• **Semen production**: The seminal vesicles and prostate gland produce the fluid that mixes with sperm to form semen, which is then ejaculated through the urethra.