221- male infertility Flashcards
explain the numbers of spermatogenesis
One 1* spermatocyte (2n) -> one 1* spermatocyte (4n) -> two 2* spermatocytes (2n) -> four spermatids (n)
what do you think of if the sample has low volume and acidic pH
ejaculatory duct blockage (pathology or absence of vas deferens and seminal vesicle)
when do you have sex to get pregnant
2 days before up until day of ovulation
what kinds of heat destroy sperm. What else does? Tobacco? alcohol? weed, cocaine, steroids?
fever or wet heat (hot tub, steam bath). Smoking does, drinking doesnt, drugs do
why do steroids cause infertility
T levels must be several hundred times higher in testicles than serum to make sperm.
how does a varicocele cause infertility
testicular hyperthemia by blocking panpiniform plexus countercurrent system
how do you fetilize with micro-TESE
have to use IVF/ICSI. Not IUI
who should get y chomosome testing
men with sperm conc <5 million/mL
what should someone with azoospermia but normal spermatogenesis on biopsy be tested for
CF
