Neuro Parts and Neurotransmitters
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Root like processes that receieve impulses and conduct them to the cell body.
A structure that textends out from the cell body.
Proess that extends AWAY from the cell body and conducts impulses AWAY from the nerve cell.
Terminal end fibers
Branching fibers at the end of the axon that lead the nervous impulse from the axon to the synapse.
Space between two neurons or between a neuron and a receptor organ.
Chemical substances that make it possible for messages to cross from the synapse of a neuron to the target receptor.
Released at some synapses in the spinal cord and at neuromuscular junction, influences muscle action.
Released within the brain, involved in mood and thought disorders.
Naturally occuring substances that produced in the brain to help relieve pain.
Released at synaptic nerve endings, responds to hypotension and physical stress.
Released at the brain, has roles in sleep, hunger, and pleasure recognition.
Provide support and protection for neurons.
Functions of Glial Cells
- (1) surround neurons and hold them in place (2) supply nutrients and oxygen to neurons (3) to insulate one neuron from another
- (4) to destroy and remove dead neurons.
- Protective covering made up of glial cells, forms the white matter of the brain, and covers some parts of the spinal cord and axon of
- most peripheral nerves.
Portion of the nerve fibers that are myelinated ( having myeline sheath)
Portion of the nerve fibers that are unmeylinated (lacking myeline sheath)
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