spermatogenesis Flashcards
3 stages of spermatogenesis
mitotic proliferation
meiosis
spermatogenesis
germ cells all stay together so they are
syncytial
mitotic proliferation, where does it occur?
basal compartment of the tubules
mitotic proliferation, to produce what from what?
primary spermatocytes from spermtogonia by repeated syncytial cell division
meiosis, what happens to primary spermatocyte
replicate DNA (XX) and migrate across seritoli cells junctions
meiosis, how does they migrate across the seritoli cell junction
transiently opening them, to reach lumen of tubules
meiosis, what happens to spermatocytes homologues chromosomes
crossing over occurs, then division 1 (meiosis 1) to form secondary spermatocyte (X)
what happens after secondary spermatocyte is formed
meiosis 2 to form spermatids (i)
spermatogenesis, what happens to spermatids
cytoplasmic remodeling occurs
spermatid to spermatozoa