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NPTE #3 > Nerves > Flashcards

Nerves Flashcards

1
Q

Musckulocutaneous Nerve

A

Segment - C5 C6
Innervation - coracobrachialis, biceps, brachialis
Distribution - anterolateral surface of forearm

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2
Q

Axillary Nerve

A

Segment - C5 C6
Innervation - deltoid, teres minor
Distribution - lateral arm over lower portion of delt

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3
Q

Radial Nerve

A

Segment - C5-8, T1
Innervation - triceps, anconeus, brachioradialis, and supinator, wrist/finger/thumb extensors
Distribution - posterior are/forearm and radial sideof posterior hand

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4
Q

Median nerve

A

Segment - C6, 7, 8, T1
Innervation - pronators, writs/finger flexors on radial side, most thumb muscles
Distribution - palmar aspects of thumb, 2nd, 3rd and radial half of 4th fingers

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5
Q

Ulnar Nerve

A

Segment - C7 C8 T1
Innervation - flexor carpi ulnaris, felxor digitorum profundus (medial half), interossei, 4th and 5th lumbricals
Distribution - medial portion of 4th finger and 5th finger

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6
Q

Sciatic Nerve

A

Segment - L4-S3
Innervation - HS and adductor magnus
Distribution - through its terminal branches of the tibial, superficial fibular, and deep fibular nerves

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7
Q

Femoral Nerve

A

Segment - L2 L3 L4
Innervation - sartorius, quads, iliacus and pectineus
Distribution - middle ant thigh and medial thigh prox to knee

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8
Q

Tibial Nerve

A

Segment - L4-S3
Innervation - gastroc/soleus, plantaris, popliteus and tib post
Distribution - posterolateral calf, ankle and heel

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9
Q

Superficial Fibular Nerve

A

Segment - L5-S2
Innervation - fubularis longus/brevis
Distribution - anterolateral distal lower leg and ankle and most of dorsum of foot

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10
Q

Deep Fibular Nerve

A

Segment - L4-S2
Innervation - tib ant, ext hallucis longus/brevis, ext dogitorum longus/brevis, fibularis tertius, 1st and 2nd dorsal interossei
Distribution - web space bwteen 1st and 2nd toes on the dorsum of foot

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11
Q

CN 1

A

Olfactory
Fx- smell
Damage - anosmia (loss of smell)

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12
Q

CN 2

A

Optic
Fx- sight, pupillary reflexes
Damage - monocular blindness, loss of pupillary constriction, absent blink reflex

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13
Q

CN 3

A

Oculomotor
Fx- moves eye and elevates upper eyelid
Damage - ptosis, dilation of pupil, loss of accomodation of light reflex

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14
Q

CN 4

A

Trochlear
Fx- motor nerve for superior oblique muscle
Damage -

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15
Q

CN 5

A

Trigeminal
Fx- mastication and sensory nerve of head
Damage - loss of facial sensation, weak mastication, deviation of opened jaw to ipsilateral side

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16
Q

CN 6

A

Abducens
Fx- abducts eye (via nerve supply to lateral rectus muscle)
Damage - diplopia, convergent squint (medial strabismus), and abductor paralysis or ipsilateral eye

17
Q

CN 7

A

Facial
Fx- facial expression, speeach articulation, winking ingestion or food/drink, taste/salivary and nasal secretions
Damage - ipsilateral facial paralysis, dry mouth, loss of taste anterior third of tongue

18
Q

What condition results from damage to CN 7?

A

Facial

Bell’s Palsy

19
Q

Injury/paralysis to what nerve causes foot drop and weakness in the intrinsic foot muscles?

A

Deep fibular nerve

20
Q

CN 8

A

Vestibulocochlear
Fx- hearing, maintenance of equilibrium
Damage - vertigo, nystagmus, tinnitus, loss of hearing

21
Q

CN 9

A

Glossopharyngeal
Fx - elevates pharynx, salivary secretion, taste
Damage - slight dysphagia, partial dry mouth, loss of taste on posterior 3rd or tongue

22
Q

CN 10

A

Vagus
Fx - phonation, visceral sensations/reflexes, cardiac depressor, bronchoconstrictor, GI tract peristolsis/secrection
Damage - palpitations, tachycardia, comiting, slowing of respiration, hoarseness, anesthesia of larynx

23
Q

CN 11

A

Accessory
Fx - deglutition and phonation, movement of head and shoulders
Damage - weakness in shrugging ipsilateral shoulder, turning head opposite side

24
Q

CN 12

A

Hypoglossal
Fx - movements of tongue
Damage - unilateral paralysis of tongue

25
Q

What are the DTR’s and what level are they testing?

A 
Biceps - C5-6
Brachioradialis - C6
Triceps - C7
Patellar tendon - L3, L4
Achilles tendon - S1, S2
26
Q

Grading scale for reflexes

A 
0 = absent reflexes = areflexia
1+ = hyporeflexive, indicates LMN injury
2+ = normal
3+ = hyper-reflexive, indicates UMN injury
27
Q

How does neural tension testing work?

A

by stretching the peripheral nerves with specific mvm’ts, the mobility of the spinal dura and nerve roots can be tested

28
Q

SLR Biases

A

SLR - sciatic
SLR + DF + EV = tibial nerve
SLR + PF + INV = fibular nerve
SLR + DF + INV = sural nerve

29
Q

What are two tests used to screen for spinal cord signs?

A
  1. Ankle clonus
    leg in slight knee flex and rapidly DF ankle
    +ve with spasmodic alternations of muscle contraction

2.Babinkski’s test
stroke plantar aspect of foot from to heel to base of great toe
+ve if great toe moves into DF and other toes fan

NPTE #3 (14 decks)

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