Question

Question #39b97

Answer 1

Well, long story.

Explanation:

Have a diagram out so you can follow.

The journey of 15 centimeters takes a really long time. A normal human ejaculation releases around 200 million sperm, of which one percent reach the cervix. The rest are killed by acidic fluids and flowback.

Of the remaining 2 million, one million reach the uterus, the rest stopped by mucus and dead ends.

10000 of the remaining reach the top organ. The rest are killed by leukocytes when they reach the perimeter.

Half of the remaining take the wrong direction, and of the 5000, only 1000 go into the Fallopian tube. The rest get caught in mucus and die.

Of the rest, 200 reach the egg. The other give up and die. Only one sperm fertilizes the egg, and the others are pushed away by the zona reaction.

The rest of the sperm, alive but stuck, become fodder for the woman's immune system.