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sac of skin hanging out side the pelvis cavity
at the root of the penis
septum separates testes
why does the scrotum keep the testes 3C lower than core body temp?
lower temp necessary for sperm production
contains 500-1000 seminiferous tubules
interstitial cells surrounding tubules produce androgens
(all tubules merge and sperms enter epididymis)
function of semen
enhances sperm motility and fertilizing ability
provides nutrients and medium
coagulation causes sperms to stick to vaginal wall
interior to prostate
make 10% of semen volume
produce thick, clear mucus that neutralizes traces of acidic urine in urethra
contained within the ovaries at various stages of development
each one contains a oocyte
ovarian follicle stages
tertiary (vesticular) follicle
corpus luteum (yellow body)
ruptured follicle that degenerates
takes place as early placenta
receive and transport oocyte and provide site for fertilization
via fimbriae sweeping, cilia beating and peristalsis
lumen mucosal lining
undergoes cyclic changes in response to hormones
sheds during menstration
structure of the uterus
fundus - superior rounded region
body - major mid-portion
cervix - narrow neck leading to the vagina
lumen - cavity
muscus gladns in the vagina secrete what and why?
is metabolized by bacteria into lactic acid, which prevents a lot of bacteria and yeast from entering
low pH keeps vagina healthy
homologous chromosomes split (2n to n)
synapses from triads
crossover can exchange sections of material
process of producing sperm via meiosis
in seminiferous tubules
happens throughout life time
luteal phase of ovarian cycle
remaining follicle forms CL
CL secretes progesterone and estrogen
CL degenerates if no pregnancy
what happens with the CL if an egg is fertilized?
produces hormones until placenta is formed (at ~ three months)
menstrual phase of menstrual cycle
uterus sheds all but the deepest part of the endometrium
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