Ch. 12 Anatomy

Front 1

the autonomic nervous system consists of the

Back 1

sympathetic and parasympathetic nervous systems

Front 2

a neuron that transmits a nerve impulse toward the central nervous system is called

Back 2

a sensory neuron, afferent neuron

Front 3

the largest and most numerous type of neuroglia is

Back 3

astrocytes

Front 4

functions of CNS

Back 4

integrating sensory information, evaluating the information, intiating an outgoing response

Front 5

part of the nervous system that transmits impulses from the cns to the skeletal muscle

Back 5

somatic nervous system

Front 6

myelin sheath is formed by

Back 6

schwann cells

Front 7

myelin sheath

Back 7

it is important for nerve impulse conduction, it covers cell bodies in the brain and spinal cord it is destroyed in multiple sclerosis

Front 8

nissle bodies are comparable to which organelle in other cells

Back 8

endoplasmic reticulum

Front 9

along a neuron the correct pathway forimpuls conduction is

Back 9

dendrite cellbody and axon

Front 10

neuron that has only one axon but several dendrites is classified as

Back 10

multipolar neuron

Front 11

reflex arc

Back 11

it always consists of an afferent neuron and efferent neuron brain and spinal cord

Front 12

multipolar neurons have

Back 12

multiple dendrites and one axon

Front 13

sensory neurons are usually

Back 13

multipolar

Front 14

fasiciles are held together by a connective tissue layer called the

Back 14

perinerium

Front 15

gray matter in the brain and spinal cord consistes primarily of

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cell bodies

Front 16

the white matter of the nervous system is made up of

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myelinated fibers

Front 17

regeneration of nerve fibers will take place only if the cell body is intact and the ibfers have

Back 17

neurilemma

Front 18

neuron with a resting potential

Back 18

sodium pump has moved na+ to the outisde of the plasma membrane

Front 19

the first even to occur when adequate stimulus is applied to a neuron is

Back 19

potassium channals open

Front 20

action potential

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outside of the plasma membrane is negatively charged and the inside is positively charges

Front 21

dopamine

Back 21

cannot cross the blood brain barrier

Front 22

when neuron is at rest

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sodium still diffuses out

Front 23

a slight shift away from resting membrane potential in a specific region of the plasma membrane

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local potential

Front 24

during relative refractory period

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the action potential can be initiated with a strong stimulus

Front 25

strength of a stimulus is accomplished through

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magnitude of nerve impulses

Front 26

synapse consists of

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synaptic knob, a synaptic cleft, the plasma membrane of a post synaptic neuron

Front 27

synaptic knob would be located

Back 27

on axon

Front 28

impulse reaches a synapse

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chemical transmitter released

Front 29

excitatory neurotransmitters are most likely to

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initiate an action potential

Front 30

amines are not one of the main chemical classes of neurotransmitters

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true

Front 31

neurotransmitters are released in a synapse and bind to

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receptors on the postsynaptic neuron

Front 32

enkephalins

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neurotransmitters that inhibit the conduction of pain impulses

Front 33

phenelzine

Back 33

an antidepressant that blocks the action of MAO monoamine oxides

Front 34

cell body are also called

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perikaryon

Front 35

dendrites

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conduct impulses towards the cell bodies

Front 36

interneurons resides in

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the cns only

Front 37

deepest connective tissue layer of a nerve

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endoneurium

Front 38

nerves that contain mostly afferent fibers are

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sensory nerves

Front 39

white matter in the cns consistes of

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myelinated nerve fibers

Front 40

compared with the outisde of the neuron the inside has a

Back 40

negative charge

Front 41

dopamine epinephrine and norepinephrine are classified as

Back 41

Amines

Front 42

human nervous system

Back 42

most cells are glia

Front 43

astrocytes attach to

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neurons and blood vessels

Front 44

one of the components of the blood brain barrier is

Back 44

astrocytes

Front 45

schwann cells

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oligodendrocytes

Front 46

telodendria

Back 46

where the axon leaves the cell body

Front 47

stimulus gated channels opne in response

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sensory stimuli, influx of potassium

Front 48

nervous system can be divided

Back 48

according to its structure, direction of information flow, control of effectors

Front 49

autonomic nervous system does not simulate

Back 49

skeletal muscles

Front 50

parasympathetic nervous system is part of the

Back 50

efferent pathway of autonomic nervous system

Front 51

no impulse can be sent through a neuron

Back 51

during absolute refractory period

Front 52

synapse can occur only between an axon

Back 52

a dendrite

Front 53

neurons have

Back 53

very limited capacity to repair themselves