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Ch11-NervTis-Basics1 Test

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1.
Bundles of neuron processes are called __ in the CNS and __ in the PNS.
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2.
Gray matter contains __ fibers.
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3.
White matter contains __ fibers.
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4.
Parallel processing
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5.
Glia cells provide a __ for neurons.
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6.
Converging Circuits
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7.
Dissolved gases
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8.
Bipolar neurons are rare & found where?
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9.
Perikaryon
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10.
Diverging Circuits
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11.
Interneurons are organized in information-processing __.
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12.
Cells of the immune system are denied access to the CNS, so __ are important to phagocytize invading microorganisms.
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13.
Name the 2 neuroglia of the PNS.
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14.
Group C nerve fibers
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15.
Clusters of cell bodies that lie along nerves of PNS are called __.
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16.
The peripheral Nervous System (PNS) consists of?
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17.
Group A nerve fibers
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18.
Sensory/Afferent Division
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19.
Biogenic Amines
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20.
Gaps in the myelin sheath are called __.
A.
Blocks (circuits)
B.
Sense organs like retina of eye & olfactory mucosa.
C.
(1) Satellite cells & (2) Schwann cells
D.
Thick myelin sheaths & diameter - Somatic sensory & motor - sense skin, skeletal muscles, & joints.
E.
Have concentrating effect - putting it all together.
F.
Nodes of Ranvier or neurofibril nodes.
G.
Ganglia
H.
Input travels along several pathways to be integrated in a different pathway. Associations.
I.
Tracts, nerves
J.
Amplifying circuits - common in sensory & motor sys.
K.
Include: dopamine, norepinephrine, etc - are catecholamines & indolamines - emotional behavior & bio clock - mental illness.
L.
Supportive scaffolding
M.
The nerves (bundles of axons) that extend FROM brain & spinal cord - spinal & cranial nerves.
N.
Unmyelinated - smalles diameter - no saltatory conduction.
O.
Neuron cell body (soma) - major biosynthetic center of a neuron.
P.
Myelinated
Q.
Microglia
R.
Nitrous Oxide, & Carbon Monoxide
S.
Consists of nerve fibers that convey impulses to the CNS from sensory receptors t/o the body.
T.
Unmyelinated
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21.
Excitatory synapses occur most often on the __.
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22.
Synapse between axon of 1 neuron & cell bodies of others are __ synapses.
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23.
Clusters of cell bodies in CNS are called __.
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24.
Axon depends on __ to renew necessary proteins.
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25.
Pain & pleasure - gut-brain peptides.
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26.
ATP - fast excitatory responses, adenosine (inhibiter of caffine)
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27.
Small ovoid cells - monitor health of nearby neurons - phagocytize microorganisms or neuronal debris.
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28.
Rough ER of neuron - probably the most active & best developed in body.
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29.
Most abundant & versatile glial cells - exchanges between capuillaries & neurons, guide migration of young neurons.
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30.
Bundles of intermediate filaments (neurofilaments) - maintain cell shape & integrity.

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