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Anatomy > Nervous System > Flashcards

Nervous System Flashcards

1
Q

Structural classification

A

CNS- brain and spinal cord

PNS- nerves outside brain

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2
Q

Functional Classification

A

Afferent(sensory)
Nerve fibers carry info to CNS
Efferent(motor)
Nerve fibers carry impulses away

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3
Q

Sensory

A

Afferent
Somatic sensory fibers
Impulses from skin, joints, skeletal muscles
Visceral sensory fibers
Impulses from visceral organs

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4
Q

Motor

A

Efferent
Somatic NS- voluntary
Autonomic NS- involuntary

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5
Q

Function of Neuroglia & what

A

Support
Insulate
Protect neuron

CNS cells grouped

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6
Q

Neurons are

A

Specialized nerve cells

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7
Q

Cell body

A

Control center

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8
Q

Dendrites

A

Conduct impulses toward the cell body

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9
Q

Axon

A

Conduct cells impulses away from the cell body

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10
Q

Nervous tissue=

A

Neurons

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11
Q

Axons end in

A

Axon terminals

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12
Q

Axon terminals

A

Contain vesicles with Neurotransmitters

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13
Q

Neurotransmitters

A

Chemical signals

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14
Q

Axon terminals separated by

A

Synaptic cleft

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15
Q

Synaptic cleft

A

Gap between neurons

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16
Q

Synapse

A

Junction between nerves

17
Q 
Myelin sheath 
Protects
Produced
Covers
Increase
A 
Tightly wrapped myelin 
Protects nerves fibers
Produced by Schwann cells
Covers axons
Increase transmission rate
18
Q

Nodes of Ranvier

A

Gaps in myelin sheath along axon

19
Q

Neurilemma

A

Part of Schwann cell
Contains cytoplasm and nucleus
On top of myelin sheath

20
Q

Neurons body location

A

Mostly CNS(processing)

21
Q

Gray matter

A

Cell bodies on surface of the brain

22
Q

Nuclei

A

Clusters of cell bodies(gray) with white matter of CNS

23
Q

Ganglia

A

Collection of cell bodies outside of CNS

24
Q

Functions

A

Sensory input
Integration process
Interpret sensory info
Decide if action needed

Anatomy (4 decks)

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