reproductive A&P Flashcards
importance of reproductive biology
- important for species survival ➞ NS
- ag: support increasing pop size/demand
- basis for all an production
testes
site of sperm & testosterone production
epididymis
site where sperm matures & is stored
- finely & highly coiled tube
- immature sperm enters at the base
- mature sperm capable of fertilizing egg at the head
- lies on outer surface of testis
vas deferens
(ductus deferens)
transport of sperm at time of arousal
* aka ductus deferens
* one for each testicle
scrotum
sac around testes for temperature regulation
pelvic urethra
muscular structure where urine & semen exit body
accessory sex glands
addition of fluid, nutrients, & buffers so sperm can be motile & help survive inside egg
* bulboureathral gland/cowper’s gland
* prostate
* seminal vesicle/vesicular gland
* ampulla (for bulls)
* glandular part of vas deferens
primary sex glands
involved in the production & maturation of sperm
* testes
* epididymis
* vas degerens
bulbourethral gland (cowper’s gland)
secrete substances to flush out both urine & sperm
prostate
secrete substances to help sperm be motile
seminal vesical/vesicular gland
secretes buffers, sugars, & vit to help sperm survive
ampulla
where sperm is stored right before ejaculation
* widening of vas deferens
* not all animals have (ex: boars)
ischio cavernosus muscle
contracts at time of mating
* erection
* straightens out sigmoid flexure to make penis erect
retractor penis muscle
brings penis back into sigmoid flexure
sigmoid flexure
holds penis inside the sheath except during copulation
* “S” shaped configuration
* allows for erection
cloaca
exit path in poultry for everything leaving the body
* feces
* urine
* sperm
* egg
reproductive organs in poultry
- cloaca
- internal testes near kidneys
- no accessory glands
testicular anatomy
pampiniform plexus (blood vessels & veins): heat exchange
seminiferous tubules: sperm formation
Leydig cells: testosterone
sertoli cells: supportive cells ➞ aid in the formation of sperm
* line seminiferous tubes
pampiniform plexus
blood vessels & veins atop testicles that allow for heat exchange
seminiferous tubules
site of sperm production in testes
Leydig cells
site of testosterone production in testicles
* inside interstitial tissue inbetween seminiferous tubules
sertoli cells
supportive cells ➞ aid in the production of sperm
* sustentacular cells
* line base seminiferous tubes
hypothalamus & pituitary location
hypothalamus sits atop pituitary in brain
* pituitary split into anterior & posterior
D
sigmoid flexure
F
testes
G
scrotum
H
epididymis
I
vans deferens/ductus deferens
J
penis retractor muscle
K
ischiocavernous muscle
L
prostate
M
bulbourethral gland (cowper’s gland)
N
seminal vesical (vesicular gland)
J
penis retractor muscle
A
seminal vesicals (vesicular gland)
D
vas deferens (ductus deferens)
E
testes (seminiferous canal)
G
tail of epididymis (caudal)
H
body of epididymis (corpus)
I
scrotum
J
spermatic cord
K
sigmoid flexure
L
retractor penis muscle
M
prostate
N
bulbourethral gland
A
ampulla
B
head of epidisymis (caput)