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organ system that functions to produce offspring
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primary reproductive organ; i.e., the testis of the male or the ovary of the female
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A&P - Ch 27
Reproductive System
| Question | Answer |
|---|---|
| organ system that functions to produce offspring | reproductive system |
| primary reproductive organ; i.e., the testis of the male or the ovary of the female | gonads |
| sex or germ cell | gamete |
| ducts, gland, & external genitalia are referred to as | accessory reproductive organs |
| sac of skin & superficial fascia that hangs outside abdominopelvic cavity | scrotum |
| male primary reproductive organ that produces sperm; male gonad | testes |
| testosterone, estrogens, & progesterone | sex hormones |
| highly convoluted tubes within the testes; form sperm | seminiferous tubules |
| cells located in loose CT surrounding seminiferous tubules; produce androgens (most importantly testosterone), which are secreted into surrounding interstitial fluid | interstitial cells |
| epididymis, ductus deferens, ejaculatory duct, and the urethra | system of ducts that delivery sperm to exterior |
| seminal vesicles, prostate, & bulbourethral glands | accessory glands that empty secretions into ducts during ejaculation |
| scrotum contains | paired testes |
| external positioning of scrotum keeps testes 3degrees C __ than core body temp | lower |
| temp of scrotum needed | for sperm production |
| failure of the testis to make their normal descent | cryptorchidism |
| encloses nerve fibers, blood vessels, & contains ductus deferens | spermatic cord |
| produce sperm; | seminiferous tubules |
| surrounding seminiferous tubules are | interstitial cells that produce androgens |
| consists of an attached root, & shaft that ends in glans penis | penis |
| internally the penis contains | urethra & 3 cylindrical bodies of erectile tissue |
| either of two masses of erectile tissue | corpora cavernosa |
| mass of tissue that, with the corpora cavernosa, forms the erectile tissue of the penis | corpus spongiosum |
| corpus spongiosum ventrally | surrounds urethra |
| portion of male duct system in which sperm mature; empties into ductus (or vas) deferens; has a head, body & tail | epididymis |
| upon ejaculation, epididymis __, __ sperm into the ductus deferens | contracts; expelling |
| runs in spermatic cord through inguinal canal into pelvic cavity | ductus deferens (vas deferens) |
| at back of bladder, ductus deferens | expands & joins duct of seminal vesicle to form ejaculatory duct |
| each ejaculatory duct | enter prostatic urethra |
| portion surrounded by prostate | prostatic urethra |
| intermediate part | membranous urethra |
| runs through penis & opens to outside at external orifice | spongy (penile) urethra |
| 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 |
| encircles prostatic urethra inferior to bladder; its secretions account for 1/3 of semen volume; enter prostatic urethra during ejaculation | prostate gland |
| pea-sized glands inferior to the prostate; produce thick clear mucus prior to ejaculation that neutralizes traces of acidic urine in urethra | bulbourethral glands |
| provides a transport medium & nutrients (fructose) for sperms; contains prostaglandins, antibiotics; contains 50-130 million sperm/ml | semen |
Created by:
lfrancois
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