chapter 16 reproductive Flashcards
(88 cards)
what are the gonads of the male/female reproductive systems?
male - testes
female - ovaries
what are gametes?
sex cells produced by the gonads
male - sperm
female - Oocytes
which sex’s reproductive systems have ducts that transport gametes to the site of fertilization?
both male and female reproductive systems
copulation and coitus mean :
sexual intercourse
what are the characteristics of puberty?
1) external sex characteristics become prominent
2) reproductive organs become functional
3) gametes mature
4) gonads secrete sex hormones
puberty starts when the hypothalamus does what?
increases the release of gonadotropin releasing hormone
scrotum =
protective skin-covered sac that provides testes with a cooler environment than body temp
why must testes be cooler than body temp? how much cooler must they be?
sperm developes successfully at 2 to 3 degrees C cooler than body temp
raphe =
midline ridge on the scrotum
dartos muscle =
layer of smooth muscle that is part of the wall of the scrotum
what are the ducts in the male reproductive system from testes to penis?
1) rete testis
2) efferent ductules
3) epididymus
4) ductus deferens
5) ejaculatory duct
6) urethra
what is seminal fluid and what is its function?
fluid that mixes with sperm.
they nourish sperm and neutralize vaginal acidity
what are the 3 glands that secrete seminal fluid?
1) seminal vesicles
2) prostate gland
3) bulbourethral gland
what do seminal vesicles secrete?
viscous, whitish-yellow, alkaline fluid that contains fructose, prostaglandins, and bicarbonate
what does the prostate gland secrete?
fluid slightly acidic that contains mucin, citric acid, seminalplasmin, and prostatic specific antigen
prostatic-specific antigen =
PSA- enzyme that helps liquify semen
what do bulbourethral glands secrete?
clear, viscous mucin that lubricates the urethra prior to ejaculation
what is the function of seminalplasmin?
antibacterial
what is semen?
seminal fluid from the 3 accessory glands combined with sperm
semen released during intercourse is called what?
ejaculate
ejaculate usually measures _____ and contains how much sperm?
measures about 3-5 mL and contain 200-500 million sperm
what forms the external genitalia in males?
the penis and scrotum
root of penis =
internal portion of penis made of bulb and crura of penis
what is the body of the penis?
the elongated (shaft) portion