Reproductive System
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| organ system that functions to produce offspring | reproductive system
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| primary reproductive organ; i.e., the testis of the male or the ovary of the female | gonads
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| sex or germ cell | gamete
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| ducts, gland, & external genitalia are referred to as | accessory reproductive organs
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| sac of skin & superficial fascia that hangs outside abdominopelvic cavity | scrotum
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| male primary reproductive organ that produces sperm; male gonad | testes
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| testosterone, estrogens, & progesterone | sex hormones
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| highly convoluted tubes within the testes; form sperm | seminiferous tubules
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| cells located in loose CT surrounding seminiferous tubules; produce androgens (most importantly testosterone), which are secreted into surrounding interstitial fluid | interstitial cells
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| epididymis, ductus deferens, ejaculatory duct, and the urethra | system of ducts that delivery sperm to exterior
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| seminal vesicles, prostate, & bulbourethral glands | accessory glands that empty secretions into ducts during ejaculation
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| scrotum contains | paired testes
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| external positioning of scrotum keeps testes 3degrees C __ than core body temp | lower
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| temp of scrotum needed | for sperm production
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| failure of the testis to make their normal descent | cryptorchidism
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| encloses nerve fibers, blood vessels, & contains ductus deferens | spermatic cord
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| produce sperm; | seminiferous tubules
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| surrounding seminiferous tubules are | interstitial cells that produce androgens
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| consists of an attached root, & shaft that ends in glans penis | penis
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| internally the penis contains | urethra & 3 cylindrical bodies of erectile tissue
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| either of two masses of erectile tissue | corpora cavernosa
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| mass of tissue that, with the corpora cavernosa, forms the erectile tissue of the penis | corpus spongiosum
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| corpus spongiosum ventrally | surrounds urethra
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| portion of male duct system in which sperm mature; empties into ductus (or vas) deferens; has a head, body & tail | epididymis
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| upon ejaculation, epididymis __, __ sperm into the ductus deferens | contracts; expelling
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| runs in spermatic cord through inguinal canal into pelvic cavity | ductus deferens (vas deferens)
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| at back of bladder, ductus deferens | expands & joins duct of seminal vesicle to form ejaculatory duct
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| each ejaculatory duct | enter prostatic urethra
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| portion surrounded by prostate | prostatic urethra
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| intermediate part | membranous urethra
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| runs through penis & opens to outside at external orifice | spongy (penile) urethra
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| secrete 60% of the volume of semen; join ductus deferens to form ejaculatory duct; sperm & seminal fluid mix in ejaculatory duct & enter prostatic urethra during ejaculation | seminal vesicles
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| encircles prostatic urethra inferior to bladder; its secretions account for 1/3 of semen volume; enter prostatic urethra during ejaculation | prostate gland
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| pea-sized glands inferior to the prostate; produce thick clear mucus prior to ejaculation that neutralizes traces of acidic urine in urethra | bulbourethral glands
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| provides a transport medium & nutrients (fructose) for sperms; contains prostaglandins, antibiotics; contains 50-130 million sperm/ml | semen
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Created by:
lfrancois
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