Chapter 9 Flashcards

1
Q

Where are nuclei located?

A

CNS

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2
Q

Neurofascicle

A

bundle of axons

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3
Q

Contains nerve tracts

A

Central

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4
Q

Afferent = _ to _

A

body to brain

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5
Q

Collections of nerve cell bodies

A

Ganglia

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6
Q

What does the perineurium cover?

A

Neurofascicle

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7
Q

Endoneurium

A

thin connective tissue that surrounds axons with myelin sheath

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8
Q

Composed of neurons and neuroglia

A

Central

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9
Q

What are the 2 anatomical regions of the nerve?

A

Neurofascicle and myelinated axons

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10
Q

Composed of nerves

A

Peripheral

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11
Q

Myelinated/unmyelinated axons

A

Axons covered with layer of neuroglia cells

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12
Q

Maintains physiological environment of axons

A

Endoneurium

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13
Q

1st to form in nervous system

A

Central

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14
Q

Efferent= _ to _

A

brain to body

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15
Q

Ganglia

A

accumulations of nerve cell bodies located in PNS

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16
Q

Which nervous system consists of the brain and spinal cord?

A

Central

17
Q

What are the two major components of the nervous system?

A

Central and Peripheral System

18
Q

Everything except brain and spinal cord

A

Peripheral

19
Q

What 3 things does the neuron structural unit consist of?

A

cell body, nerve fiber, organelles

20
Q

What is the function of the epineurium?

A

Healing

21
Q

Afferent

A

Carries sensory info from body to brain

22
Q

What do myelinated axons have that unmyelinated axons don’t?

A

Schwann cells

23
Q

What three things does the Endoneurium help do?

A

Control level of electolytes, support nutrients, remove waste

24
Q

Efferent

A

Transmits signals from brain to glands/muscles

25
Q

Epineurium

A

Continuous sheet of areolar connective tissue

26
Q

Why does the endoneurium separate nerve cells?

A

So action potential from one does not interfere with another

27
Q

What is the function of the Perineurium?

A

Protection