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The Nervous System
page 214 Nervous Systemby perpetualplum on Flickr

The Nervous System is divided into two parts. The Central Nervous System and the Peripheral Nervous System. 
     The Central Nervous System consists of the Brain and Spinal Cord.
     The Spinal cord is made up of small bones or Vertebrae
     The Peripheral Nervous System contains all of the other nervous tissue.
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774 - Neuron Connection - Patternby Patrick Hoesly on Flickr

     Nerves branch out from the brain and central cord to every part of the body. Nerves consist of Axons and Neurons.
     There are two main types of cells in the Nervous System. One of them is the Neuron. Neurons have dendrites, a cell body, and of course a nucleus. They also have an Axon, which sends impulses to the brain and other parts of the body. At the end of the Axon is the Axon Terminal
     There are two different types of neurons. There are Sensory Neurons and Motor Neurons. Sensory Neurons receive information from receptors which respond to heat, and light. Motor Neurons carry signals from the brain to the muscles to control movement
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Synapsesby Mark Cummins on Flickr

     There are two types of nerves known as Somatic and Autonomic. Somatic Nerves control voluntary processes, while Autonomic Nerves control involuntary processes. 
     In the Autonomic Nervous System is where they Autonomic nerves are. The Autonomic Nervous System is divided into three parts. There is the Sympathetic, the Parasympathetic, and the Enteric
     The Sympathetic Nervous System tends to act in opposition the parasympathetic nervous system. It speeds up the heart beat and causes the contraction of the blood vessels. It's activated especially under the condition of stress. The Parasympathetic nervous System slows down your heart rate, and dilates the blood vessels. 
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my particular Universe (including me)by brunosan on Flickr

The Brain consists of two hemispheres. The right hemisphere controls the left side of your body and the right hemisphere controls the left side.
The Brain also is divided into three sections. The Cerebrum, the Cerebellum, and the Medulla
The Cerebrum controls thought, voluntary movement, language, and reasoning. 
The Cerebellum controls balance, and coordinates body movement.
The Medulla controls breathing, heart rate, and blood pressure. 
Homeostasis is the process carried out by the human body to obtain a normal body temperature. 

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