Nerves of UE Flashcards

1
Q

Musculocutaneous

A

C5-7

Anterior/lateral to axillary artery

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2
Q

What muscle does MC pierce?

A

Coracobrachialis then goes btw brachialis and biceps brachii

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3
Q

What is after MC?

A

lateral antebrachial cutaenous nerve

radial side of forearm, lateral to biceps tendon

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4
Q

Ulnar nerve

A

c7-T1

anterior and medial to axillary artery

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5
Q

What does Ulnar pierce?

A

intermuscular septum and goes under Arcade of Struthers

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6
Q

What is Arcade of Struthers?

A

aponeurotic band/ canal

btwn IM septum and medial head of triceps

proximal to medial epicondyle

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7
Q

What tunnel does ulnar pass through?

A

Cubital Tunnel

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8
Q

What are borders of cubital tunnel?

A

Roof: arcuate ligament of osborne
(prevents subluxation of ulnar nerve)

Floor: MCL on floor

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9
Q

What muscles does ulnar go between to get to anterior ante brachium?

A

Flexor Carpi Ulnaris

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10
Q

What distal tunnel does ulnar pass through?

A

Guyon’s Tunnel

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11
Q

Borders of Guyon’s Tunnel

A

Floor-transverse carpal

Roof- Pisohamate ligament

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12
Q

What does ulnar split into after Guyon’s?

A

Deep- motor

Superficial- sensory

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13
Q

Radial Nerve

A

C5-T1

posterior to axillary artery

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14
Q

What space does Radial pass through?

A

Triangular interval

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15
Q

Radial nerve relationship to muscle?

A

deep to lateral head of triceps

pierces IM septum—-btwn brachialis and brachioradialis

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16
Q

What tunnel does radial pass through?

A

Radial Tunnel

17
Q

Borders of radial tunnel?

A

Fibrous edge of ECRB and arcade of Froshe and then splits into deep and superficial radial

18
Q

What is path of deep radial?

A

after tunnel goes under Arcade of Froshe

pierces supinator and then becomes PIN

19
Q

Path of Superficial radial?

A

Deep to brachioradialis, emerges posterior to distal tendon, roof of snuff box

innervates lateral dorm of hand only sensory

20
Q

Median Nerve

A

c5-T1

1/2 medial - 1/2 lateral cord

anterior to axillary artery

21
Q

Path in Brachium

A

anterior brachium, medial to biceps brachii

22
Q

What ligament does median pass under?

A

Ligament of struthers

medial epicondyle- supracondylar process

23
Q

What does it run with in cubital fossa?

A

medial to brachial artery and biceps tendon

24
Q

What muscle does median go through?

A

Pronator Teres

25
Q

What nerve does Median give off?

A

AIN

26
Q

Orientation of Median at wrist?

A

lateral to FDS, gives off cutaneous branch before going into carpal tunnel

27
Q

Sensory innervation of median?

A

skin of lateral palm and dorsal tips of 3.5 fingers