Page 20 - The Cell in 40 Topics
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The Cell in 40 Topics
works in the exactly reverse direction. When the density of water in the
blood becomes elevated, the receptors in the hypothalamus slow down the
secretion of vasopressin (Figure 10). As the amount of vasopressin de-
creases, the volume of urine increases accordingly, and the level of water in
the blood is returned to normal, healthy levels.
This flawless system is just a single example of the sophisticated sys-
tems operating throughout the body. And even this brief description is suf-
ficient to show that nothing takes place haphazardly, but that all things, at
all times, are under the control of Omniscient and Almighty God.
Figure 10.
When the concentration of water rises in the blood, sensors in the hypo-
thalamus slow the release of the hormone vasopressin.
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