bulbourethral gland
one of two pea-sized glands that secretes thick, clear alkaline mucus that contributes to the production of semen. The secretions also help neutralize any urine remnants in the urethra
ductus deferens
first duct through which sperm travels after leaving the epididymis. It is a storage site for sperm and facilitates sperm transport from the epididymis to the urethra
epididymis
convoluted, or coiled, duct that is a storage site for sperm and where sperm mature before being passed to the ductus deferens
gamete
mature haploid cell carrying genetic material. Male gametes are sperm, and female gametes are eggs
gonad
reproductive organ that produces gametes and sex hormones
interstitial endocrine cell
one of several cells found in the seminiferous tubules that secretes the sex hormone testosterone
penis
organ that delivers sperm and urine outside the body
prostate gland
gland surrounding the urethra that secretes a milky, slightly acidic fluid that contains citric acid, proteolytic enzymes, and prostate-specific antigen
scrotum
the sac of skin and fat located outside the body that contains the testes and regulates testicular body temperature
semen
thick, whitish fluid that contains mature sperm cells in suspension
seminal vesicle
one of a pair of glands that release secretions that contain citric acid, fructose, and prostaglandins into the ejaculatory duct
seminiferous tubule
tightly coiled tube in the testes where sperm production occurs. Sperm storage and transport also occur here
spermatic cord
cord-like structure that includes the ductus deferens and surrounding tissue, through which sperm travels
spermatid
immature sperm cell that undergoes a physical transformation to become a mature sperm cell or spermatozoa
spermatogenesis
specific type of meiosis that is responsible for the creation of sperm cells
sustentocyte
one of several cells found within the walls of the seminiferous tubules that produces and transports sperm
testicle (plural, testes)
one of the two male gonads that produces sperm cells and testosterone
testosterone
sex hormone that signals the development of male sex organs and contributes to specific secondary sexual characteristics in males
urethra
muscular tube used by both the reproductive and urinary systems in males to carry semen and urine through the penis and out of the body
zygote
diploid cell formed from the fusion of a male and female gamete