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urethra
passage of urine and semen
meatus
opening of urethra
corpora cavernosa
2 columns of spongy erectile tissue
top side of penis
fill with blood during erection
(clitoris in women)
corpus spongiosum
underside of penis
spongy tissue
fills with blood during erection
glans
tip
head of penis
huge amount of nerve endings
corona
crown b/t glans and shaft
remove anything from vagina
Prepuce
foreskin
over glans
removed during circumcision
tyson's glands
glands under foreskin
produce smegma
Root
base of penis
anchor to pelvic bone via crura
scrotum
loose skin that holds testes
Cremaster Muscle
raises and lowers testes in response to temperature changes
94degrees
erection
nerve fibers swell the arteries of penis
allowing blood to rush into corpora cavernosa and corp spongiosium
spermatogenesis
production of sperm in testes
13-14 yrs mature sperm
testes
manufacture sperm
maintains optimal spermatogenesis
1/4 mile tubing in each
leydig celles
interstital cells
produce testosterone
(in testes)
semiiniferous tubules
sperm producing tubes winding through testes
epididymus
top of testes
holds sperm until they mature
connected to semiferous tubules
seminiferous tubules
tightly coiled ducts in testes where sperm is produced
greenish picture
vas deferens
one of two long tubes that mix other fluids to create semen
seminal vesicles
2 glands under bladder
causes semen to coagulate
main 50% of ejaculate
capilotory plug
soft in humans
hardens in other species
seals female reproductive tract (flow back)
spermatoza
mature sperm
23 chromosomes
determine gender of baby
70% modal - hunt egg
ejaculatory duct
transports spermatazoa from vas deferns to urethra
cowper's glands
pre-ejaculate
pair of glands that lie below prostrate
spermatogonium
immature sperm cell that will develop into a spermatocyte
spermatocyte
intermediate stage of spermatozoon
spermatids
final stage in the production of sperm
sperm formation takes 72 days/300m a day
2 stages of ejaculation
1.stimulation:
epididymis, seminal vesicles, prostrate empty fluid into uretral bulb while the bladder is closed off the prevent urine from being expelled
2. contractions usually orgasim
Male Puberty
begins in brain around 10
hypothalmus releases GnRH & LH
LH stimulates testoserone in testes
LH & Testosterone stimulate sperm production
testosterone
w/LH to produce sperm
hair
growth spurts
deep voice
metabolism
andropause
70-80
spermogenesis decreases
ejaculate thinner
lower testosterone
cryptorchidism
testes fail to descend into sctotum
temp = no sperm
testicular torsin
twisting of testicles spermatic cord
priapism
painful persistent erection
blood trapped in penis
peyronie's disease
calcifications in penis = curved penis
anabolic-androgenic steroid use
damage liver
shrink testicles
serum lipids and reproductive systems damaged
Author
jrestucc
ID
71035
Card Set
Sexuality
Description
Exam 2
Updated
2011-03-06T18:41:13Z
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