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skin-covered pouch in the groin divided into two sacs, each containing a testis and an epididymis

testis (testicle)

one of the two male reproductive glands, located in the scrotum, that produce sperm and the hormone testosterone

sperm spermatozoon

male gamete or sex cell produced in the testes, which unites with the ovum in the female to produce offspring


coiled duct on top and at side of the testis that stores sperm before emission


erectile tissue covered with skin that contains the urethra for urination and ducts for the secretion of seminal fluid (semen)

glans penis

bulging structure at the distal end of the penis (glans = acorn)


foreskin; loose casing covering the glans penis, removed by circumcision

vas deferens

duct that carries sperm from the epididymis to the ejaculatory duct (vas = vessel; deferens = carrying away)

seminal vesicle

one of two saclike structures behind the bladder and connected to the vas deferens on each side; secretes an alkaline substances into the semen to enable the sperm to live together


a mixture of the secreations of the testes, seminal vesicles, prostates and blubourethral glands discharged from the male urethra during orgasm (semen = seed)

ejaculatory duct

duct formed by the union of the vas deferens with the duct of seminal vesicle; its fluid is carried into the urethra

prostate gland

trilobular gland that encircles the urethra just below the bladder, which secretes an alkaline fluid into the semen

bulbourethra glands (Cowper's glands)

pair of glands below the prostate with ducts opening into the urethra, which adds a viscid (sticky) fluid to the semen


external region between the scrotum and anus in a male and between the vulva and anus in a female

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