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53 Cards in this Set

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sperm created here
seminiferous tubule
70% of semen volume comes from
seminal vesicles
30% of semen volume comes from
prostate gland
semen contribution from prostate gland made up of
citric acids, enzymes
gland that makes pre cum
bulbourethral
Sympathetic axons release _____ (_____ of spinal cord)
norepinephrine, middle
Parasympathetic axons release _____ (_____ of spinal cord)
ACh, bottom
contracting trabecular walls E/F
flaccid
constricting arterioles E/F
flaccid
blood readily exits the sinusoids E/F
flaccid
pressure within the corpus cavernosum is low E/F
flaccid
parasympathetic fibers release Ach, VIP and nitric oxide gas E/F
erect
Arterioles open, letting blood in E/F
erect
smooth muscle relaxes, collapsing veins E/F
erect
smooth muscle walls relax, letting blood into sinusoid E/F
erect
viagra inhibits an enzyme that breaks down ___
cGMP
Nitric oxide increase levels of cyclic GMP (cGMP) in smooth muscle walls E/F
erect
activates penile erection during REM sleep
locus coeruleus
vasocongestion
the walls of the vagina engorge with blood
transudation
lubricating fluid seeps through vaginal walls
measure female sexual arousal with
photoplethysmograph
what contracts in ejaculation
urethra and pelvic muscles
4 types of sex steroids
androgens, estrogens, progestins, corticosteroids
when is testosterone highest in women?
at ovulation
terminates bone growth in puberty
estradiol
when is progesterone highest in women?
luteal
steroid hormones are rings of
carbon atoms
lipophilic hormones
steroid hormones
posterior lobe of pituitary controls
oxytocin and vasopressin
when is the uterus's secretory phase?
luteal
when is the uterus's proliferative phase?
follicular
corpus luteum releases
progesterone
tamoxifen and raloxifene act on
estrogen receptors
tamoxifen is an agonist in _____, increasing the risk of ______
uterus, endometrial cancer
tamoxifen is an antagonist in _______, treating ______
breast tissue, breast cancer
raloxifene is an agonist in _____ and an antagonist in ______
bone tissue, breast/uterus
Removal of masking proteins on the outer surface of the sperm by enzymes present in the uterus and oviducts
capacitation
The sperm’s acrosome fuses with its outer membrane, exposing receptors that bind to the zona pellucida as well as releasing protein-digesting enzymes that clear a path through the zona pellucida, so that the sperm can reach the ovum’s outer membrane
acrosome reaction
after 7 weeks, embryo refered to as
fetus
Testes and ovaries develop from
genital ridge
product of the SRY gene is
transcription factor
a protein whose job is to bind to and regulate the activity of other genes
transcription factor
germ cells migrate to
developing gonads
sertoli cells secrete
AMH
leydig cells secrete
androgens
____ smaller in gay men
INAH3
_____ smaller in male transsexuals
INAH3
onuf's nucleus is in…
sacral spinal cord
innervates muscles associated with root of penis
onuf's nucleus
____ larger in females
AVPV
men's brains produce more ____ than female brains
serotonin
Pregnancy test strip has antibodies that detect
hCG
LH surge ____ hours before ovulation
36