The Nervous System Flashcards
recognizes and coordinates the body’s response to changes in its internal and external environments with the use of neurons
the nervous system
basic unit of structure and function of the nervous system
neurons (nerve cells)
spaces between neurons
synapse
soma
cell body
receives impulses and deliver them to the cell body
dendrites
extension of the neuron that carry impulses away from the cell body
axon
made up of Schwann cells and is the protective covering of the axon
myelin sheath
spaces between myelin sheath
nodes of ranvier
processes, interprets, stores information; issues orders to muscles, glands, organs
central nervous system
bridge between brain and peripheral nerves
spinal cord
transmits information to and from the CNS
peripheral nervous system
controls skeletal muscles
somatic nervous system
regulates glands, blood vessels, internal organs
autonomic nervous system
mobilizes body for action, energy output
sympathetic nervous system
conserves energy, maintains quiet state
parasympathetic nervous system
