Repro Test (part 2) Flashcards
exocrine functions
sperm producing functions
endocrine functions
testosterone producing functions
seminiferous tubules
“sperm forming factories”
empty sperm into another set of tubules
the same cells in the testes produce sperm and testosterone
false
epididymis
20/20 days
provides temporary storage for the immature sperm for maturation
vas deferns
runs upwards from the epididymis through an inguinal canal into the pelvic cavity and arches over the superior aspect of the bladder
vasectomy
small incisions through the scrotum and then cuts through the vans deferens
two functions of the urethera
carries both urine and sperm to the body exterior
*urinary and reproductive”
seminal vesicles
produce about 60% of the fluid volume of semen
prostate gland
encircles the upper (prostatic) part of the urethra just below the bladder
scrotum
divided sac of skin that hangs outside the abdominal cavity
spermogenesis
excess cytoplasm sloughed off = mature egg
spermogensis pattern
spermatogonia-prim. sperm - spermatios - mature sperm
how long is the oocyte viable
12 to 24 hours after it is casted out of the ovary
how long is the sperm viable
12 to 48 hours after ejaculation
how long is super sperm viable
72 hours after ejaculation
how do sperm locate the oocyte
they are attracted to the oocyte by chemicals that act as a ‘homing device’
how long does it take for the sperm to get to the uterine tubes
1 to 2 hours
How are sperm able to break down the corona radiata
when sperm reach the oocyte, hundreds of their acrosomes rupture, releasing enzymes that break down the “cement” that holds the follicle cells of the corona radiata