oogenesis and spermatogenesis Flashcards
spermatogenesis produces __ in the __ in the testicle, taking about __ months
spermatozoa, seminiferous tubules, 2 months
spermatogonia
diploid cell going through mitosis in proliferation phase of spermatogenesis
spermatocyte
primary spermatocytes result from the spermatogonia in the proliferation phase and then undergo meiosis to form secondary spermatocytes
spermatid
form from secondary spermatocytes that undergo meiosis 2, considered round cells
spermatozoon
fully mature sperm cell
3 phases of spermatogenesis
- proliferation: mitosis, spermatogonia produce spermatocytes in basal compartment
- meiosis: primary and secondary spermatocytes produce spermatids
- differentiation: spermatids and spermatozoon
the chromosome number is reduced by half in __ of spermatogensis
meiosis II
t/f: no further cell division takes place in the differentiation phase, just morphological changes to form the mature sperm
T
LH and FSH are released from the __. LH will act on __ cells to produce testosterone while FSH will act on __ cells to produce estradiol
anterior pituitary, leydig cellls, sertoli cells
phases of differentiation in spermatogenesis
- golgi phase
- cap phase
- acrosome phase
- maturation phase
describe the function of the epididymis related to sperm maturation
the site where spermatozoa mature and acquire their functions of motility and fertility
oogenesis definition
growth and distinction of the females primordial germ cells
when is the primary oocyte arrested until puberty?
arrested in meiosis I: Prophase I
meiosis I resumes in response to __ and __ pre-ovulatory stimuli resulting in the secondary oocyte
FSH and LH
the secondary oocyte is arrested in ___ until ___ and finishes meiosis after __
metaphase II, ovulation, fertilization
