lecture 35 - male reproduction Flashcards
why does the scrotum house the testes away from the body
to maintain a temperature of 34 degrees
what muscle lines the scrotum and what does it do
Dartos muscle
allows the scrotum to wrinkle the skin, pulls it tight to reduce surface tension
what does the cremaster muscle do to the scrotum
contract for heat conservation
what are the spermatic cords
two cords that run between abdomen and testes
what does the venous plexus allow for
thermal exchange between arteries and veins
what are the two corpora cavernosa in the penis and what location are they in anatomical position
main erectile tissue / dorsal aspect
what is the corpus spongiosum and what location is it in anatomical position
contains urethra / ventral aspect
what type of erectile tissue has less erectile tissue
spongiosum
where are the seminal vesicles located
posterior to the bladder
anterior to the ampulla
what percentage of semen is fluid from the seminal vesicles
~60%
where is the prostate gland located
inferior to the bladder
wraps around the prostatic urethra
what % of semen comes from secretion from the prostate
~30%
what are the bulbourethral glands
two glands located in the urogenital diaphragm
what % of semen comes from the bulbourethral glands
5%
what is the last 5% of semen come from
spermatozoa
