Create an account
the duct in the embryo that forms the female gonads; the result of femal gonads growing is from the absence of androgens and not the presence of estrogen
in male embryo forms the urethra and paraneal raphe; in the female it produces the labia minora
countercurrent exchange system in testes
sperm do not produce in 37 degrees, so the cremaster and dartos muscle contract and descend to help with temperature; the warm blood from the artery diffuses to vein and makes the blood cooler for the testes
covered by tunica albingea, contains seminiferous tubules where sperm is produced and is lined with germinal epithelium, which consist of germ cells that become to be sperm consist and sertoli cells, which protect germ cells and promote development; aslo has leydig cells which are responsible for testosterone production
mixed with sperm in ejaculation that protects and nourishes sperm; contains carbs acid neutralizing bases
hypothalamus secrete GnRH to the anterior pituitary and tells it to secretes FSH and LH; FSH goes to sertoli cells adn they secrete androgen binding protien, while LH goes to leydig cells and they secrete testoterone; the ABP makes the testosterone stimulate spermatogenesis; as a negative feedback testosterone inhibits gonadotropins going to pituitary gland
the production of sperm; starts with stem cell called spermatogonia, these cell divide by mitosis into 2 daughter cells, type A remains near the wall and serve as a lifetime supply of stem cells, type B enlarges and becomes primary spermatocytes, these cells need protection because they are genetically different from the body, the BTB comes along behind it and closes in on it, spermatocytes goes under meiosis 1 and turns into secondary spermatocytes, then it goes under meiosis 2 and turns into 4 haploid cells called spermatids
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together