histology of nervous tissue

Created by Crna4lyf 

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30 terms

phagocytosis of debris (dead cells, bacteria, etc)

microgila

form myelin around axons in the CNS

oligodendrocytes

support the neurons; may serve nutritive function and help regulate the chemical environment on the neurons

astrocytes

line cavities of the brain (and spinal cord); aid in circulation on cerebrospinal fluid

ependymal cells

what is the PNS glial cell that forms myelin?

Schwann cell

what is the PNS glial cell that surrounds dorsal root ganglion neurons?

satellite cell

the brain and spinal cord colletively

central nervous system

speicalized supporting cells in the CNS

neuroglia

junction or point of the close contact between neurons

synapse

a bundle of nerve processes inside the CNS

tract

neuron serving as part of the conduction pathway between sensory and motor neurons

interneuron

ganglia and spinal and crainal nerves

peripheral nervous system

collection of nerve cell bodies found outside the CNS

ganglion

neuron that conducts impulses away from the CNS to muscles and glands

efferent neuron

neuron that conducts impulses toward the CNS from the body periphery

afferent neuron

chemical released by neurons that stimulate or inhibit other neurons or effectors

neurotransmitters

region of the cell body from which the axon originates

axon hillock

secretes neurotransmitters

axon terminal

receptive region of a neuron

dendrite

insulates the nerve fibers

myelin sheath

site of the nucleus and is the most important metabolic a area

neuronal cell body

maybe involved in the transport of substances within the neuron

neurofibril

essentially rough endoplasmic reticulum, important metabolically

Nissl bodies

impulse generator and transmitter

axon

what substance is found in synaptic vesicles of the axon terminal?

neurotransmitters

what neuron types are unipolar?

sensory neuron

what neuron is most likely multipolar?

motor neuron, interneuron

surrounds axon

endoneurium

surrounds a bundle of axons

perineurium

surrounds all of the axons contributing to a nerve

epineurium

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