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Neuro Anatomy > PNS anatomy > Flashcards

PNS anatomy Flashcards

1
Q

spinal nerves

A

31 paris
8 - cervical
12 - thoracic
5 - lumbar
5 - sacral
1 - coccygeal

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2
Q

dorsal ramus

A

carry motor info to muscle (deep back)
carry sensory from skin of back

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3
Q

ventral ramus

A

carry motor anterior thorax + extremities
carry sensory from same

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4
Q

epineurium

A

extension dura mater

surround entire nerve trunk

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5
Q

perineurium

A

extension arachnoid

wraps bundles of fibers into fascicles

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6
Q

endoneurium

A

surround each individual axon

*Schwann cells between endoneurium and membrane of axon

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7
Q

motor neuron

A

ventral horn

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8
Q

sensory neuron

A

peripheral ganglia (DRG)

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9
Q

ANS neuron

A

brainstem, spinal cord and peripheral ganglia

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10
Q

age-related change

A

peri+epi thicken
endo fibrosis with increase collagen

decrease # myelinated and unmyelinated

ventral more effected (motor)

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11
Q

1st degree damage (Sunderland)

A

neuroapraxia

myelin

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Neuro Anatomy (8 decks)

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