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Monday March 22, 2010 5:12 am
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The Nervous System - Basic Version |
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 The nervous system of the human being is responsible for sending, receiving, and processing nerve impulses throughout the body. This series of articles explains the nervous system in a more basic way. |
More Articles in These Sub-Categories:
Articles In This Section:
What is the Nervous System?
by Dr. Gary Farr 9/27/2003
The nervous system is composed of those elements within the animal organism that are concerned with the reception of stimuli, the transmission of nerve impulses, or the activation of muscle mechanisms. It could be considered as the master control unit inside your body. We discuss the nervous system in detail.
Free Newsletter
by Dr. Gary Farr 7/22/2003
Sign up for our FREE health newsletter from BecomeHealthyNow.com. The Healthy newsletter brings the latest research, news and ideas you can use, fun mini-quizzes and a listing of the live events and happenings on the BecomeHealthyNow sites and communities. You'll always be up to date on current health topics as the BecomeHealthyNow.com web site is continually updated.
Health Survey
by Dr. Gary Farr 7/22/2003
The health survey finds out about the state of your health. You may discover things about your health you didn't know before. This increased awareness of your health can help you take the appropriate action to improve the state of your body's function.
Pain
by Dr. Gary Farr 9/27/2003
Pain, unpleasant sensory and emotional experience caused by real or potential injury or damage to the body or described in terms of such damage. Scientists believe that pain evolved in the animal kingdom as a valuable three-part warning system. First, it warns of injury. Second, pain protects against further injury by causing a reflexive withdrawal from the source of injury. Finally, pain leads to a period of reduced activity, enabling injuries to heal more efficiently.
Reflexes
by Dr. Gary Farr 9/27/2003
A reflex is an involuntary response to a stimulus by the animal organism. In its simplest form, it consists of the stimulation of an afferent nerve through a sense organ, or receptor, followed by transmission of the stimulus, usually through a nerve center, to an efferent motor nerve, resulting in action of a muscle or gland, called the effector.
The Brain
by Dr. Gary Farr 9/27/2003
The brain is the portion of the central nervous system contained within the skull. The brain is the control center for movement, sleep, hunger, thirst, and virtually every other vital activity necessary to survival. It is important to note that although human emotions—including love, hate, fear, anger, elation, and sadness—can be influenced by the brain, they are ultimately controlled by the mind. The brain and the mind ARE NOT THE SAME.
The Cranial Nerves
by Dr. Gary Farr 9/26/2003
The cranial nerves are composed of twelve pairs of nerves that emanate from the nervous tissue of the brain. In order reach their targets they must ultimately exit/enter the cranium through openings in the skull. Hence, their name is derived from their association with the cranium. The function of the cranial nerves is for the most part similar to the spinal nerves, the nerves that are associated with the spinal cord. The motor components of the cranial nerves are derived from cells that are located in the brain.
The Meninges
by Dr. Gary Farr 9/26/2003
The meninges, (singular meninx), are three membranous envelopes—the pia mater, the arachnoid, and the dura mater—that surround the brain and spinal cord. Cerebrospinal fluid fills the ventricles of the brain and the space between the pia mater and the arachnoid. The chief function of meninges and cerebrospinal fluid is to protect the central nervous system.
The Spinal Cord
by Dr. Gary Farr 9/27/2003
The spinal cord, that part of the central nervous system contained within the vertebral or neural canal. In the adult human it extends from the base of the skull to the second lumbar vertebra.
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