Peristalsis takes place in the sperm duct, this causes sperms to move a t a fast pace along the sperm duct. When the sperms reaches the urethra, seminal fluid from the prostate is injected into the semen flow. This causes semen to be ejaculated with a force.Originally posted by laurence82:How?![]()
Are you a bio student>?Originally posted by poon cho tang:peristalsis
Yup, think of it as, longitudinal muscle contracts, circular muscles relax.Originally posted by poon cho tang:-- peristalsis refers to the waves of involuntary muscle contractions that transport food, waste matter, or other contents through a tube-shaped organ such as the intestine n the ductus deferens (semen carrying tubes)
-- the ductus deferns are muscular tubes (surrounded by smooth muscle) connecting the left and right epididymis to the ejaculatory ducts in order to move sperm-rich semen. Each tube is about 30 centimeters long.
-- During ejaculation the wall of the vas deferens thickens and thins itself, thus propelling the sperm forward.
Originally posted by thinger:next you'll be asking how you arse gets poo out...
NIKE...Originally posted by Hello Kitty:ask fer much fer wat. juz do it lah.
Gupy !!!Originally posted by Danisdead101times:<----maybe can ask this...
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looks more like a tappole to me...Originally posted by plneo05:Gupy !!!![]()
Do what?Originally posted by Hello Kitty:ask fer much fer wat. juz do it lah.