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19 Cards in this Set

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spermatogenesis (74 days) where?

stimulated by?
seminiferous tubules
120 million pe day.

gonaditrophic hormones-
testosterone-leydig cells (by LH)
sertoli cells
-surround developing spermatagonia
-makes estrogen (20% of female)
spermatogenesis pathway?

duration
spermatogonia 46
primary spermatoctes 46
first division
secondary spermatoctes 23
second division 19 days
spermatodids 23
spermatozoa 23
cap? from what?
acrosomal cap

golgi apparatus
process by which the sperm become capable of fertilizing the ovum (after insemination)?
maturation
male?

female?
XY male

XX female
semen make up?
60%-seminal fluid (last-washer)
30%-prostatic fluid (alkalinizes female tract)
10%-vas deferens (sperm)
bulbouretheral-mucus
seminal vesicles secrete what 4 substances?
fructose
citric acid
prostaglandins (cervical mucous, stimulates tubes, uterus)
fibrinogen
what is capacitation?
making it possible for the sperm to pentrate the ovum.

increased CA perm which increases flagellation and makes the cap more permeable to allow degredation of the zona pallucida
fertization occurs when?
when the oocyte and the sperm fuse to make one new cell genome.
failure of the testes to descend?

why?
Cryptorchidosm

not enough testosterone from inadequately developed testes.
testosterone from?
leydig cells (only after stimulation by LH)

highly protien bound
lining of scrotum?

concering of testes?
lining- tunica vaginalis

covering-tunica albuginea
middle of scrotum?
perineal raphe
cells that produce spermatagonia?
sustenacular cells
sperm pathway?
semiferous tubules
straight tubule
rete testis in mediastinum
efferent ducts
head of epidydimus
body of epidydimus
tail of epidydimus
ductus deferens
epididymus tissue?
psuedostratified columnar epithelium with cilia
semen ph?

volume of ejaculate?
7.5

2-6cc

20-200 million sperm (,20 mill=infertile)
spermatogonia divide and leave?
1 spermatogonium than can continue to divide and

1 daughter cell that becomes a spermatocyte that does not divide