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nervous system notes

QuestionAnswer
What are the 3 functions of the nervous system? 1.sensation 2.integration 3.motor output
what is sensation used for? detecting changes in the environment
what is integration used for? 1. Evaluates new information 2. Makes decisions
what is motor output used for? Signals a response for muscles to move or glands to secrete hormones
what are the cells that carry information through the nervous system? neurons
what are bundles of fibers composed of neurons that use electrical and chemical signals to transmit sensory and motor information? nerves
what is the message that a neuron carries? nerve impulse
how does a never impulse travel? 3 steps 1. moves through a neuron from the dendrite to the cell body to the axon 2. crosses the synapse (neurotransmitters carry the impulse across the gap) 3. travels through the next neuron
what are the 4 structures? 1. brain 2. cerebrum 3. cerebellum 4. brain stem
what are the functions of the brain? sensation and intellectual activity
what are the functions of the cerebellum? coordinates movement & regulates temperature
what are the functions of the cerebellum? maintains posture & voluntary muscle movement
what are the functions of the brain stem? send signals & connects cerebrum with spinal cord
what are the 3 functions of the spinal cord? 1. bundle of nerves in the spine 2. sends signals to the body 3. sends signals back to the brain
what are the 2 divisions of the nervous system? 1. central nervous system (CNS) 2. peripheral nervous system (PNS)
what does the CNS consist of? brain, spinal cord, protected by skull and vertebrae
what does the PNS consist of? all nerves outside the CNS
nervous system terms ->
cerebell/o cerebellum
cerebr/o cerebrum
encephal/o brain
myel/o spinal cord
neur/o nerve
-algia pain
-paresis weakness
-phasia speech
plegia paralysis
-praxia action
syncop/o to cut off or cut short
esthesi/o , esthesia nervous sensation
cine/o movement
Created by: Aloha05
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