High resolution

Module 7: Figure vas deferens activation



Activation of the vas deferens.

The smooth muscle cells that surround the vas deferens are controlled by sympathetic neurons that have numerous varicosities that release ATP and noradrenaline (NA) to control the peristaltic contractions that transport sperm from the testis to the urethra. See text for details of the signalling pathways used by ATP and NA.