male reproductive system structures and functions

Penis

Delivers semen into the female reproductive tract; contains erectile tissue and the urethra

Scrotum

Sac of skin holding the testes outside the body; keeps them cooler than body temp for sperm production

Testis

Produces sperm and testosterone

Seminiferous tubules

Coiled tubes inside the testes where sperm are actually produced

Epididymis

Stores and matures sperm after they leave the testis

Vas deferens

Muscular tube that transports mature sperm from the urethra toward the epididymus during ejaculation

Seminal vesicle

Secretes sugar-rich fluid that nourishes sperm and makes up much of semen volume

Prostate gland

Adds fluid that helps sperm survive and move (nourishes and activates sperm)

Cowper's gland

Releases pre-ejaculate fluid that lubricates and neutralizes acidity in the urethra before ejaculation