From: gts (gts@optexinc.com)
Date: Tue Oct 08 2002 - 15:48:18 MDT
Robert Bradbury wrote:
>> Actually if you've ever studied the endocrine system then
>> you know it is extremely complicated.
> Hmmm... Reaching up above my desk I pull down "The Neuroendocrine
> Theory of Aging and Degenerative Disease" by V. M. Dilman and
> Ward Dean. So I think I'm aware to some degree of its complexity.
I've read that paper and it's a good one, but it is far from a full
treatment of the subject. The text I use for reference is _Endocrine
Physiology_ by Balint Kacsoh, a textbook for med students. Trust me,
Robert, the endocrine system is *extremely* complex. :)
> I would say that "some" of that information is contained in our genes.
Okay, then where is the rest of it?
Every neuron in our brains contain our DNA. Every action of a given
neuron is under the control of the genetic material in the nucleus of
that neuron, such that every thought is under the control of our genes.
To continue with the testosterone example, testosterone binds to its
receptors on those neurons in our brains that are equipped to handle
testosterone. The biding of testosterone to its receptor on the surface
of the neuron initiates a sequence of chemical events by which the
presence of testosterone is communicated to the genetic material in the
nucleus. The genes that code for neural responses to testosterone
respond by initiating sequences of intercellular events that modify the
electro-chemical activities of that neuron, thus changing its
communications with neighboring neurons. A complex cascade of neural
events ensues, culminating in the appearance of conscious or unconscious
thoughts and feelings that pertain to such things as sex and aggression.
The entire process is under genetic control.
-gts
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