Page 53 - The Miracle of Hormones

The Two Governors Of Our Body:
The Hypothalamus And The Pituitary Gland

ADH) reserved in the pituitary gland. This message is written for the
cells surrounding the millions of microscopic tubules in the kidneys. A
message is sent to these cells, ordering them to keep back the water mol-
ecules in the urine.
At this point, several questions come to mind: How do cells located
in the pituitary gland have the intelligence to send orders to kidney cells
far distant from themselves and which they have never seen before? How
can they write a message that the kidney cells will understand and obey?
Thanks to this communication system, they purify a great number
of water molecules in the urine and mix them with the blood again. As a
result, the amount of urine is reduced and fluid in the body is restored to
a certain level.
In the case that we have drunk too much water, the reverse opera-
tion is put into effect. When the fluid level of the blood increases, the sen-
sors in the hypothalamus slow down the release of the ADH hormone.
When this happens, the absorption of fluid in the kidneys is decreased.
The amount of urine increases and fluid level in the blood is held in bal-
ance.
A characteristic of the ADH hormone is its ability to contract the
blood vessels to cause an increase in blood pressure. This is a very well
designed security assurance system and another proof of the fact that
human beings are specially created. In order for such a security system to
function, a comprehensive plan has been put into effect. In the upper
chambers of the heart and in the veins coming into the heart, special
devices have been placed to measure the pressure of the blood. The ca-
bles (nerves) coming from these devices are connected to the pituitary
gland. When blood pressure is normal, these devices are stimulated and
continuously send electrical impulses to the pituitary gland to prevent
the release of the ADH hormone. 8
This system resembles an alarm system that uses infrared rays. If a
thief unknowingly comes into contact with one of these rays, the connec-
tion between a source of light and a receiver is broken and an alarm
sounds.

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