quiz 9 Flashcards
describe sperm transportation in the male tract
no protein synthetic ability
redistribution of protein and lipids in plasma membrane and sperm
changes lipid diffusion coefficients
define decapitation factor
accessory sex glands added to the urethra
can be protein, glycolipid or lipid
stabilizes the plasma membrane
what is the sequence of sperm deposition in the female
immediate transport
cervix
uterus
oviduct
fertilization
describe immediate transport
retrograde loss
phagocytosis
entrance into cervix/uterus
describe cervix
the privileged pathway
removes non-motile sperm and abnormal sperm
describe uterus
capacitation initiated
phagocytosis
describe oviduct
capacitation complete
hyperactive motility
describe fertilizaiton
acrosome reaction
spermatozoon penetrate oocyte
male and female pronuclei form
how can sperm be lost from the female tract
retrograde flow (prevented with fractionation and coagulation)
phagocytosis by neutrophils (increases due to E2 and removes invasive microorganisms and sperm)
what are evolutionary stratagies to keep sperm in the vagina/have fertilization occur
coagulation of semen/a plug
concentrated semen
semen depostited into uterus
what do neutrophils do
remove debris, bacteria, sperm, etc
when are the most neutrophils in the uterus
about 12 hours after insemination
describe rapid transportation
some sperm reach the oocyte in just a few minutes via uterine contractions, but can not fertilize the oocyte because they are infertile
describe sustained transport. how long do they stay in each portion
move slowly through the uterus
6-12 hours in the uterus/cervix
18-24 hours in the isthmus
1-2 hours in the ampulla
what does the cervix have
the privilege pathway
