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30 terms

histology of nervous tissue

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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