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scrotum
a bag; skin-covered pouch in the groin that is divided into two sacs, each containing a testis and an epididymis
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testis (testicle)
one of the two male reproductive glands, located in the scrotum, that produces sperm and the male hormone testosterone
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sperm/spermatozoon
male gamete or sex cell produced in the testes that unites with the ovum in the female to produce offspring
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epididymis
coiled duct on top and at the side of the testis that stores sperm before emission
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penis
erectile tissue covered with skin that contains the urethra for urination and ducts for the secretion of seminal fluid (semen)
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glans penis
bulging structure at the distal end of the penis
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prepuce
foreskin; loose casing covering the glans penis - removed by circumcision
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vas deferens
duct that carries sperm from the epididymis to the ejaculatory duct
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seminal vesicle
one of two sac-like structures lying behind the bladder and connected to the vas deferens on each side - secretes an alkaline substance into the semen to enable the sperm to live longer
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semen
mixtures of the secretions of the testes, seminal vesicles, prostate, and bulbourethral glands discharged from the male urethra during orgasm
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ejaculatory duct
duct formed by the union of the vas deferens with the duct of the seminal vesicle; its fluid is carried into the urethra
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prostate gland
trilobular gland that encircles the urethra just below the bladder - secretes an alkaline fluid into the semen
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bulbourethral glands (Cowper glands)
pair of glands below the prostate with ducts opening into the urethra - adds a viscid (sticky) fluid to the semen
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perineum
external region between the scrotum and anus in a male and between the vulva and anus in a female
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spermatic cord
cord containing the vas deferens, arteries, veins, lymph vessels, and nerves that extends from the internal inguinal ring through the inguinal canal to each testicle
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