Page 129 - The Miracle of Hormones
P. 129
Sex Hormones
tics, has created an ideal harmony in the progesterone-oxytocin mech-
anism.
Progesterone has another special feature, which is still another
proof of the helplessness of human beings before God Who created
them.
The moment a fertilized egg cell reaches the wall of the uterus and
begins to grow there, it becomes something foreign in the mother's body.
The immune cells in the mother's body would inevitably attack this
group of cells as they multiply. This attack would end the life of the baby
even before it began and pregnancy would never occur.
But progesterone prevents the cells of the immune system from
attacking the zygote in the wall of the uterus. Besides its other functions,
progesterone also protects the developing group of cells from being at-
tacked. Certainly, this shows once again that progesterone was created
by a high intelligence, that is, by God.
As noted earlier, secretion of progesterone occurs in the second half
of a four-week period. If fertilization does not occur in this period of
time, the amount of progesterone and estrogen in the blood quickly
decreases because it is no longer necessary to make preparations for a
new human. These preparations (the multiplying capillary vessels to
feed the fertilized egg in the wall of the uterus) are expelled from the
body, a process called menstruation.
The secretion of the FSH hormone four weeks later in the pituitary
gland corresponds to a new egg cell that begins to maturate in the ovary,
and another new four-week preparation period starts.
The Male Reproductive System
Hormones also play a key role in the male reproductive system.
About 10 years after birth, when adolescence begins, male hormones
come totally into play. This happens when a chain of command is estab-
127