Galen A&P NU-110 Exam 4 Exam Complete Test ,
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What is a Microglia? - Answer-Plays a protective role by
phagocytosis of pathogens or damaged tissue.
What are Oligodendrocytes? - Answer-Makes up the
Myelin Sheaths for neurons in the CNS.
What is Myelin? - Answer-White fatty material that
insulates and protects the axons on neurons.
What is another name for Myelin? - Answer-Super
Conductor
How does Myelin help the neuron? - Answer-Helps speed
up how fast the electrical signal can travel
What does Glia do for the neuron? - Answer-Supports
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Insulates
Nourishes
Protects
What are the 3 types of neurons? - Answer-Sensory
(afferent) neurons
Interneurons
Motor (efferent) neurons
What does the acronym SAME stand for? - Answer-S-
sensory
A-afferent
M-motor
E-efferent
What is the purpose for interneurons? - Answer-Allow us
to analyze incoming data and responsible for us to think,
learn, and memorize.
-Found only in the CNS
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What are the different parts of the neuron? - Answer-
Dendrites
Cell body
Axon
What are dendrites? - Answer-treelike structures that
receive signals from other neurons and then transmit the
signals towards the cell body.
What are axons? - Answer-Axons are long extension that
transmits signals away from the cell body.
What are Schwann cells? - Answer-Makes up the myelin
sheath in the PNS and assists with regeneration of
damaged fibers
What are the Nodes of Ranvier? - Answer-Axonal areas
not covered by myelin
What are the different types of nervous tissue? - Answer-
Neurons and Glia
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What makes up the Nervous System? - Answer-1) The
central nervous system
2) The peripheral nervous system
What makes up the CNS? - Answer-The brain and the
spinal cord
What makes up the PNS? - Answer-The nerves that
connect the CNS with the rest of the body
What are the 4 types of Glia cells? - Answer-Astrocytes
Microglia
Ologodendrocytes
Schwann cells
What is an Astrocytes - Answer--most abundant of the glia
cells
-makes up the blood brain barrier
-promotes nerve growth