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-Mental and physical activity and many aspects of homeostasis are controlled by the nervous system, a complex network of cells that communicate with one another.
-Organization
• The nervous system is composed of neurons, specialized cells that transmit information throughout the body. ...
• The nervous system includes two major divisions: the central nervous system and the peripheral nervous system. The brain and spinal cord make up the central nervous system. ...
• The peripheral nervous system consists of the neurons that are not included in the brains and spinal cord. Some peripheral neurons collect information from the body and transmit it toward the central nervous system. ... Other peripheral neurons transmit information away from the central nervous system. ... The hypothalamus is very important in maintaining homeostasis, and it both directly and indirectly controls much of the body’s hormone production
• Parts of the diencephalons and the cerebrum are included in an important group of connected brain centers called the limbic system. The limbic system includes the thalamus, the hypothalamus, some deeper parts of the cerebral cortex, and centers in the temporal lobes. ... The reticular formation helps to control respiration and circulation and serves as a filtering system for incoming sensory signals. ...
• Thirty-one pairs of spinal nerves, part of the peripheral nervous system, originate in the spinal cord and branch out to both sides of the body.
Approximate Word count = 1000
Approximate Pages = 4
(250 words per page double spaced)
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