Welcome, on behalf of the previous sperm that have been here, I will guide you through your journey in the female body.
Oh no I hope I survive this scary acid.
You have now entered the first line of defense in the castle, 99% of the sperm will die here do you must avoid the deadly acid.
I'm smart enough not to get lost.
Many sperm get lost throughout the tunnels of the castle, in order to survive you must stay on route and go single file and try not to get lost.
Sperm are made in the testicle then go through the vas deference pass the prostate gland, and the celpers gland. Then Sperm enter the vagina from the Urethra.
You will never get past me!
This is by far the most dangerous part of the castle you must now fight the guards!
bout 250,000 sperm enter the vagina and 99% of them will die within 30 minutes due to the deadly acids that are supposed to protect the vagina from pathogens.
Here sperm, you may stay here until it is time to see the egg. Once you see her you obly have 24 hours so you must be quick. Oh here she is now! Better hurry!
There are about 60,000 sperm remaining when they get to the cervix. The cervix is usually plugged with mucus another line of defense but during ovulation estrogen flows from ovary to uterus which softens the mucus to sperm can swim through. Another line of defense is the thousands of passageways if they do not stay in the cervical canal they will die in these passages.
After the egg and perm join they travel back to the Uterus! Here they are now on the side of the Uterus! It looks like the fetus will be a girl.
The remaining 3,000 sperm will go on to face the Leukocytes or white blood cells that are launches by the female bodies immune system. the sperm that survive this attack will start to search for the correct Uterotubal Junction (door way to the Fallopian tube.
The remaining 10-30 sperm that found the correct Fallopian tube will wait in the Fallopian tube where they will now be safe from any harm and they will wait for up to 6-7 days for the egg to be realized. Once the egg is released they only have 24 hours and they will race to see who will get there first and win the race to fertilize the egg.
Once one of the sperm fertilized the egg, the egg will travel to the uterus where the zygote cells will begin to divide. After four days of this the small bundle of cells is names a blastocyst, and five days later the embryo will break out of it s protective shell and implants into the wall of the uterus and starts to develop and grow.