Brachial Plexus

Question 0

2 muscles between which the brachial plexus passes through

Answer 0

anterior and middle scalene

Question 1

borders of the brachial plexus

Answer 1

anterior: sternocleidomastoid
posterior: trapezius
inferior: middle third of clavicle

Question 2

Peripheral nerve inury (Sedon) with no loss of nerve continuity and is reversible

Answer 2

Neuropraxia

Question 3

Peripheral nerve inury (Sedon) with disruption of axon and myelin sheath, but still with regeneration and good recovery

Answer 3

Axonotmesis

Question 4

Peripheral nerve inury (Sedon) with complete anatomic severance of the nerve; requires surgery

Answer 4

neurotmesis

Question 5

shoulder adducted, elbow extended, wrist flexed due to lesion on C5-C6 a.k.a Waiter’s tip deformity

Answer 5

Erb Duchenne’s Palsy

Question 6

lesion on C8-T1

Answer 6

Klumpke’s Palsy

Question 7

abnormal collection of CSF contained in a cavity

Answer 7

pseudomeningocoele

Question 8

axon regeneration rate

Answer 8

1mm/day or 1 inch/month

Question 9

procedure to restore elbow flexion at C5-C7

Answer 9

steindler’s flexoplasty

Question 10

[nerve root, muscle innervated] lateral pectoral nerve

Answer 10

C5, pectoralis major

Question 11

[nerve root, muscle innervated] suprascapular nerve

Answer 11

C5,6; infraspinatus, supraspinatus

Question 12

[nerve root, muscle innervated] Dorsal scapular nerve

Answer 12

C5, Rhomboids major and minor, supraspinatus, levator scapulae

Question 13

[nerve root, muscle innervated] musculocutaneous

Answer 13

C5,6;coracobrachialis, brachialis, biceps brachii

Question 14

[nerve root, muscle innervated] axillary nerve

Answer 14

C5,6; deltoid, glenohumeral joint, teres minor

Question 15

[nerve root, muscle innervated] radial

Answer 15

C6,7,8; all extensors of the wrist

Question 16

[nerve root, muscle innervated] lower subscapular nerve

Answer 16

C6; inferior subscapularis

Question 17

[nerve root, muscle innervated] thoracodorsal nerve

Answer 17

C7; latissimus dorsi

Question 18

[nerve root, muscle innervated] superior subscapular

Answer 18

C5; upper subscapularis

Question 19

[nerve root, muscle innervated] long thoracic

Answer 19

C5,6,7; serratus anterior

Question 20

[nerve root, muscle innervated] median nerve

Answer 20

C6,7,8,T1; all wrist flexors except FCU, ulnar flexor digitorum

Question 21

[nerve root, muscle innervated] ulnar nerve

Answer 21

C8,T1; all intrinsic muscles of the hand except LOAF

Question 22

[nerve root, muscle innervated] medial pectoral nerve

Answer 22

C8; pectoralis major, minor