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spring semester anatomy exam study guide 2019

Terms in this set (140)

two principal components of the CNS
brain and spinal cord
compare the functions of axons and dendrites
axon- conducts impulses away from the cell body
dendrite- conduct electrical impulses to the neuron cell body for the cell to function
the main function of the peripheral nervous system is to interpret sensations and stimuli such as cold, pressure, heat, and pain
false
what type of neurons transmit impulses from the CNS to organs, muscles, and glands of the body
motor (efferent) neurons
interneurons are the only category of neurons that have no axons
false
during an infection of the CNS, you would expect to find an increase in the number of which glial cell?
microglial
multipolar neurons have many ? cell processes but only one ? cell process
dendrite; axon
within the nervous system, there are more neuroglial cells than neurons
true
name the structure that increases the speed of nerve impulse transmission, yet is destroyed in individuals with multiple sclerosis
myelin sheath
myelinated axons appear a dusky gray color when CNS organs are dissected
false
why is white matter of the CNS white in appearance?
myelin is a white lipid substance
What are neurotransmitters?
chemical secreted by an axon at a synapse
neurotransmitters are stored and released by neurons from the ? of axon terminals
synaptic knob
one of the basic functions of the nervous system is to regulate the quality of air in the lungs
false
closely associated with capillaries within the brain; help maintain the protective blood brain barrier
astrocytes
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