Page 99 - Consciousness in the Cell

HARUN YAHYA
WHAT IF YOU NEVER FELT THIRST?

Throughout the day, there are systems that detect the slightest
changes to the amount of water in your body. The main one is an
area, about the size of an almond, in the brain called the hypothal-
amus. Among other things, the hypothalamus is sensitive to the
water content of the blood. When the water level drops, there is a
noticeable, albeit small, decrease in blood pressure. At this point,
baroreceptors come into play. Located at the aorta, where blood
first exits the heart, they are involved with detecting changes in
blood pressure. On being activated, these sensitive receptors
immediately send a message to the hypothalamus, which in turn
responds by ordering the pituitary, the pea-sized gland right
beneath it, to begin producing and secreting a hormone called
vasopressin, or ADH.
Via the bloodstream, this hormone embarks on a long journey
and eventually arrives at the kidneys. Just as a key fits into its
intended lock, the kidney has special receptors that are just right
for this hormone. When it reaches the receptors, they communi-
cate the message that the kidneys need to go into water-saving
mode, and the kidney cells
immediately begin retaining
water, to bring the amount of
water lost to a minimum.
This same hormone also
causes the sensation of thirst
in the brain. And as a result of
this perfect built-in system, of
which we are totally unaware,
we can balance our body's vasopressin
water level with a glass from hormone (ADH)
the faucet.

97