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Anatomy Unit 3 Test

Enter the letter for the matching Answer
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1.
Spinal Cord Anatomy-Gray Matter
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2.
PNS support cells Schwann cells
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3.
Types of Neurons-Functional classification
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4.
Spinal Cord Anatomy-White Matter
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5.
Glia
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6.
Functions of the NS
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7.
CNS support cells Oligodendrocytes
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8.
Organization of the NS
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9.
Types of Neurons-Structural classification
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10.
Organization of the NS (con't)
A.
surround axons in the PNS Form myelin sheath around axons of the PNS
B.
gray color; surrounds hollow central cavities of the CNS; forms H-shaped region in SC; Dorsal half has cell bodies of interneurons;Ventral half has cell bodies of motor neurons; Primarily has of neuronal cell bodies, dendrites, unmyelinated axons
C.
Sensory Integrating Motor
D.
Ovrall is control and communication, achieved through Monitoring internal/ external stimuli Processing and interpreting stimuli;Responding to stimuli to maintain homeostasis
E.
Neuroglia Glial cells have branching processes and a central cell body Outnumber neurons 10 to 1 Make up half the mass of the brain Can divide throughout life
F.
PNS; Struct: Cranial nerves,Spinal nerves Funct:Transduce and direct incoming stimuli to CNS (afferent pathway); Innervate muscles and glands to produce effect (efferent pathway)
G.
Form myelin in CNS
H.
Lies external to the gray matter of the CNS; Composed of myelinated axons; Consists of axons passing between specific regions of the CNS Tracts are bundles of axons traveling to similar destinations
I.
number of dendrites Unipolar Bipolar Multipolar
J.
CNS, Structures:Brain; Spinal cord Functions:Integration of incoming stimuli
Type the Question that corresponds to the displayed Answer.
incorrect
11.
insulates the axon and ensures the integrity of the neuron’s electrical signal; an outgrowth of the glial cells that produce it;mostly fat with some proteins
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12.
Neurons connected by physical space Electrical activity in pre-synaptic neuron produces chemical exocytosis that acts on post-synptic neuron.
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13.
Soma:cell body, contains typical cell structures CNS collection of neuron cell bodies=nucleus; PNS=ganglion
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14.
Neuron has only one, Impulse generator and conductor; Transmits impulses away from the cell body Multiple branches at end of axon, Terminal branches end in knobs called axon terminals (also called end bulbs or boutons)
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15.
Longevity:can live/ function for a lifetime; Mostly amitotic:fetal neurons lose their ability to undergo mitosis; neural stem cells are an exception; High metabolic rate:require abundant oxygen and glucose
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16.
Somatic:Afferent pathway from external stimuli/ Efferent pathway to skeletal muscles Visceral:Afferent pathway from internal stimuli /Efferent pathway to smooth muscle, cardiac muscle, and glands
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17.
consists of branching neurons (nerve cells) and support cells (glia). is capable of initiating and conducting electrical signals
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18.
Extensive branching from the cell body;Transmit electrical signals toward the cell body; Function as receptive sites for receiving signals from other neurons

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Created by: s.dornbusch
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