Ch. 11 Structure and Function

bulbourethral gland

One of two glands below the prostate that secrete a fluid to lubricate the inside of the urethra; also called Cowper's gland.

Cowper's gland

One of two glands below the prostate that secrete a fluid to lubricate the inside of the urethra; also called bulbourethral gland.

ejaculation

Expulsion of semen outside the body.

epididymis

Group of ducts at the top of the testis where sperm are stored.

flagellum

Tail at the end of a sperm that helps it move.

foreskin

Flap of skin covering the glans penis; removed by circumcision in many cultures.

glans penis

Sensitive area at the tip of the penis.

penis

Male reproductive part that covers the urethra on the outside of the body.

perineum

Area between the penis and the anus.

prostate gland

Gland surrounding the urethra that emits a fluid to help the sperm move and contracts its muscular tissue during ejaculation.

scrotum

Sac outside the body containing the testicles.

semen

Thick, whitish fluid containing spermatozoa and secretions from the seminal vesicles, Cowper's glands, and prostate.

sperm

Male sex cell that contains chromosomes.

spermatogenesis

Production of sperm.

spermatozoon

See sperm.

testicle

See testis.

testis

One of a pair of male organs that produce sperm and are contained in the scrotum.

testosterone

Primary male hormone.

vas deferens

Narrow tube through which sperm leave the epididymis and travel toward the urethra.