Sperm fertilize the egg

egg Sperm fertilize the

egg Sperm fertilize the

egg Sperm fertilize the

egg Sperm fertilize the

These changes make the mucus a great transport medium for the sperm, and help the sperm continue traveling. Once the spermatozoon has entered, the peripheral portion of the yolk changes into a membrane, the perivitelline membrane, which prevents the passage of additional spermatozoa. Only about 1 in Sperm fertilize the egg million sperm that are ejaculated into the vagina will reach the site of fertilization.

#Sperm fertilize the