Pectoral Girdle and Muscles of the arm + Innervation

Question 1

Supraspinatus

Answer 1

Suprascapular nerve (C5/C6)

Question 2

Infraspinatus

Answer 2

Suprascapular nerve (C5/C6)

Question 3

Teres minor

Answer 3

Axillary Nerve (C5/C6)

Question 4

Teres major

Answer 4

Inferior subscapular nerve (C5,6,7)

Question 5

Long head of triceps

Answer 5

Radial nerve (C6,7,8)

Question 6

Through which foramen does the suprascapular nerve pass?

Answer 6

Suprascapular foramen

–> Ossification of the foramen compresses the nerve, leads to paralysis of the supra and infra spinatus muscles

Question 7

Subscapularis

Answer 7

Lower and upper subscapular nerve

Question 8

Latissimus dorsi

Answer 8

Thoracodorsal nerve

Question 9

Biceps brachii

Answer 9

Musculocutaneous nerve

Question 10

Trapezius

Answer 10

Accessory nerve

Question 11

Serratus anterior

Answer 11

Long thoracic nerve (C5, 6, 7)
–> Paralysis sees winging of the scapula.
Extends from the lateral border of ribs I to IX to the medial border of the scapular

Question 12

Levator scapulae

Answer 12

Dorsal scapular nerve

Question 13

Rhomboid minor

Answer 13

Dorsal scapular nerve

Question 14

Rhomboid major

Answer 14

Dorsal scapular nerve

Question 15

Deltoid

Answer 15

Axillary nerve