Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
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 |
