Brachial Plexus

Question 1

Dorsal Scapular n. innervates? + level

Answer 1

C4-C5; Levator scapulae, Rhomboid major and minor

Question 2

Suprascapular n. innervates? + level

Answer 2

C4-C6; Supraspinatus, infraspinatus

Question 3

N. to subclavius innervates? + level

Answer 3

C5-C6; Subclavius muscle

Question 4

Long thoracic n. innervates? + level

Answer 4

C5-C7: Serratus anterior

Question 5

Branches of lateral cord?

Answer 5

Lateral pectoral n.
Musculocutaneous n.
Median nerve (lateral root)

Question 6

Branches of medial cord?

Answer 6

Median nerve (medial root)
Medial Pectoral n.
Medial antebrachial cutaneous n.
Medial brachial cutaneous n.
Ulnar nerve

Question 7

Branches of posterior cord?

Answer 7

Upper subscapular n.
Thoracodorsal n.
Lower subscapular n.
Axillary nerve
Radial n.

Question 8

Lateral Pectoral n. innervates? Level?

Answer 8

C5-C7; Pectoralis Major

Question 9

Musculocutaneous n. innervates? Level?

Answer 9

C5-C7; Corachobrachialis, Biceps Brachii; Brachialis; skin of lateral forearm

Question 10

Medial Pectoral n. innervates? Level?

Answer 10

C8-T1; Pectoralis major + minor

Question 11

Medial antebrachial cutaneous n.? Level?

Answer 11

C8-T1; Skin of medial forearm

Question 12

Medial brachial cutaneous n.? Level?

Answer 12

T1; Skin of medial arm

Question 13

Upper subscapular n.? Level?

Answer 13

C5-C6; Subscapularis (upper part)

Question 14

Thoracodorsal n.? Level?

Answer 14

C6-C8; Latissimus dorsi

Question 15

Lower subscapular n. Level?

Answer 15

C5-C6; Subscapularis(lower part); teres major

Question 16

Axillary nerve? Level?

Answer 16

C5-C6; Deltoid, teres minor; skin of lower deltoid region