Cranial And Spinal Nerves Flashcards

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1
Q

Cranial nerve I

A

Name: olfactory
Sensory (s)
Function: smell
If damaged: loss of smell

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2
Q

Cranial nerve II

A

Name: optic
Sensory (s)
Function: vision
If damaged: vision in affected eye can be lost

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3
Q

Cranial nerve III

A

Name: oculomotor
Motor (m)
Function: eye movement
If damaged: double vision, can’t move up and down, pupil may not respond right to light

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4
Q

Cranial nerve IV

A

Name: Trochlear
motor (m)
Function: turns eye downwards, rotates eyeball towards nose
If damaged: double images, eye cannot turn down

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5
Q

Cranial nerve V

A

Name: trigeminal
Sensory + motor (b)
Function: Sensory info from face
If damaged: trigeminal neuralgia

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6
Q

Cranial nerve VI

A

Name: abducens
Motor (m)
Function: turns eye laterally
If damaged: affected eye cannot turn fully outward

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7
Q

VII

A

Name: facial
Sensory + motor (b)
Function: motor nerve to facial muscles, taste from 2/3 tongue
If damaged: distorted appearance, problem closing eyes, chewing, taste, making expression, some numb areas

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8
Q

Cranial nerve VIII

A

Name: Vestibulocochlear
Sensory (s)
Function: hearing, equilibrium
If damaged: deafness, ringing in ear, unsteady balance, vertigo +nausea

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9
Q

Cranial nerve IX

A

Name: glossopharyngeal
Sensory + motor (b)
Function: taste from posterior 2/3 tongue, sensation in throat and outer ear
If damaged: loss of gag reflex, difficulty swallowing, loss of bitter and sour taste

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10
Q

Cranial nerve X

A

Name: vagus
Sensory + motor (b)
Function: visceral sensations, major role in: cardiac, digestive and urinary systems
If damaged: difficulty swallowing, speaking, loss of gag reflex

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11
Q

Cranial nerve XI

A

Name: accessory
Motor (m)
Function: swallowing, neck, shoulder muscles
If damaged: weakness in shoulder, asymmetry of shoulder and upper back, shoulder drooping

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12
Q

Cranial nerve XII

A

Name: hypoglossal
Motor (m)
Function: controls tongue, movement for speech, food manipulation, swallowing
If damaged: impairs speech, swallowing

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13
Q

C1-C5

A

Plexus: cervical
Area of body served: head, neck, shoulders,

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14
Q

What happens if spinal cord above C3 is severed

A

Breathing stops

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15
Q

C5-T1

A

Plexus: Brachial
Area of body served: chest, shoulders, arms and hands

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16
Q

T12-L5

A

Plexus: Lumbar
Area of body served: back, abdomen, groin, thighs, knees, calves

17
Q

L4, L5, S1-S4

A

Plexus: sacral
Area of body served: pelvis, buttocks, genitals,thighs, calves, feet

18
Q

S4, S5, Co1

A

Plexus: Coccygeal
Area of body served: small region over the coccyx

19
Q

What do plexuses ensure?

A

That if a single spinal nerve gets damaged there will still be inner action to that area of the body

20
Q

Why don’t thoracic nerves participate in forming of plexuses?

A

Thoracic nerves give rise to intercostal nerves.
Controls: muscles, sensory info regarding skin, parietal pleura

21
Q
A

Abducens (CN VI)

22
Q
A

Facial CN VII

23
Q
A

Olfactory bulb

24
Q
A

Optic CN II