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N.system

definitions

QuestionAnswer
Nervous System a complex, highly organized system that coordinates all the activities of the body
Neuron the basic structural unit of the nervous system or nerve cell
Dendrites nerve fibers (carries impulses towards the cell body)
Axon a single nerve fiber (carries impulses away from the cell body)
Myelin Sheath a lipid fat covering of an axon, increases the rate of impulse transmission and insulates and maintains the axon
Synapse spaces between the axon and the dendrites
Neurotransmitters located at the end of each axon allow the nerve impulses to pass from one neuron to another
Nerves a combination of many nerve fibers located outside the brain and spinal cord
Afferent sensory, nerves carry messages from all parts of the body to the brain and spinal cord
Efferent motor, nerves carry messages from the brain and spinal cord to the muscles and glands
Associative or Internunical carry both sensory and motor messages
Central Nervous System consists of the brain and spinal cord
Peripheral Nervous System consists of the nerves
Autonomic Nervous System division of the peripheral nervous system contols involuntary functions
Created by: kberwald
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