Expert: Walter Hintz - 3/30/2008

Question
Hi there,

I'm having difficulty finding out some basic biology facts.  I know that when girls are born, all of the ova are present.  How many are there?

Also, how long does it take for the ovum to make its journey to the womb?

Do we know what triggers the ovulation?

If you have any idea where I could look for basic biology facts like this, I'd appreciate knowing where, and then I can quit bugging all you nice volunteers!

Thanks so much!

With Blessings,

erin

Answer
Hi erin
There are about 2000,000 immature ova at birth and around 300,000 at puberty.  Don't ask me how they know this.  Who counts them?
 It takes 3-7 days for the egg to get to the uterus (ave 5)
 FSH and estrogens stimulate the egg development and Leutinizing hormone (LH) triggers the ovulation.
 Ant good Biology or Anatomy text should give you all this information