PHYS 1B Male Rerpo (spermatogenesis) Flashcards
spermatogenesis
occurs along?
these are lined by what epithelium conaining what two populations of cells?
entire process takes how long? staggered to allow?
spermatogenesis
3 phases?
what lines basement membrane of seminiferous tubules?
from primary spermatocyte (ploidy?)
to spermatozoa? (ploidy)
mitotic divisions- AKA? _____ phase? at puberty? after last division resulting cells are called?
Meiosis- production of ____ gamete? the cells from end of mitotic phase undergo? first one produces? second? ploidy/chromosomes?
Spermiogenesis- (_____)? end product of meiosis undergo spermiogenesis and mature into? what changes? ends in? with release from?
spermiogenesis and structure of a spermatozoon
starting with spermatid?
1- what vesicle?
- what aligns where?
- what starts?
- what two structures formed?
- then what happens?
- finally?
sections of a mature spermatozoon
hormonal factors that stim spermatogenesis
(5)
secreted by?
functions?
without stim of what cells spermiogenesis will not occur? by?
without what can be lower or infertile?
Testosterone
Estrogens
feedback regulation of spermatogenesis
normal feedback loop?
with administartion of exogenous T or androgenic analog?
sperm maturation- continues in?
spend how long here? after release from?
what matures here?
what occurs here that prevents premature reaction before contact with an egg?
after maturation can act as?
different stages of male sexual function
plasma T and sperm production
when high? when low?
function of seminal vesicles?
main function?
contains?
this does what?
what aid in fertilization?
how? (2)
function of prostate gland
main functions? (2)
secrete what? contains? (5) secreted when?
adjustment- how? this enhances?
semen
composed of? (5)
final pH? this does what?
live for how long in genital ducts?
max life span after ejaculation? this is at what temp?
each ejaculation contains how much sperm?
male reproductive tract conveys?
once spermatozoa emerge from efferent ductules they leave gonad and enter what portion of repro tract? comprised of? (6)
two main differences from female tract?
male sexual response erection
_______ event
3 erectile bodies in the penis?
composed of _____ network of _______ spaces lined with _________ within_______?
during flaccid state blood flow to erectile tissue is? due to?
male sexual response: erection
during erection what nerves innervatin what? of the what (which supply?) release what?
this activates what messenger pathway? this causes what?
the vaso_____ allows what to happen?
engorgement does what?
what type of stimulation also promotes erection? via?
male sexual response: emission
it is what? under what control?
causes what to happen? (after first stimulation)
what happens that prevents a problem?
what comes first emission or ejaculation? but?
the male sexual response: ejaculation
is what?
caused by?
innervated by?
contraction causes semen to exit ______ and ______ through the _____
sperm are mature when they leave epididymis but activity held in check by?
when do changes occur? (that get rid of the activity check)
This is called???
changes include? (3)
washed away?
loss of? membrane?
sperm acrosome reaction
what is stored in the head of the sperm? (acrosomal head) (2)
each does what?
quick events leading up to release?
gonadal dysfunction in the male
T deficiency effects depend upon?
4 examples? in chronological order
1
male hypogonadism
two syndromes?
K- occurs when? characterized by?
KL- what is it? characteristic? what is destroyed? resulting in?
primary vs secondary hypogonadism
T and LH level
example of primary and secondary?
other pathologies
male pattern baldness caused by? treated by?
benign prostatic hypertrophy: treated with?
prostate cancer: treated with?
tumor of testis (intersitital cell tumors) : produce what?
germinal epithelial tumors: produce?
Andropause
what is it?
when this occurs what happens?
decrease slowly after age?
this means decreased what?
repro function and spermatogenesis declines?
loss of sexual activity typically when?
