Muscles Of The Shoulder And Upper Arm (Nerve And Action)

Question 1

Name the nerves of the trapezius

Answer 1

-Accessory nerve (cranial nerve XI), and cervical nerve C3 and C4

Question 2

Name the nerves of the latissimus dorsi

Answer 2

Thoracodorsal nerve C(6), 7, 8

Question 3

Name the nerves of the levator scapulae

Answer 3

Dorsal scapular nerve C5 and cervical nerve C3 and C4

Question 4

Name the nerves of the rhomboideus minor

Answer 4

Dorsal scapular nerve C5

Question 5

Name the nerves of the rhomboideus major

Answer 5

Dorsal scapular nerve C5

Question 6

Name the nerves of the deltoid

Answer 6

Axillary nerve (C5, 6)

Question 7

Name the nerve of the teres major

Answer 7

Lower subscapular nerve (C5,6)

Question 8

Name the nerves of the supraspinatus

Answer 8

Suprascapular nerve (C5,6)

Question 9

Name the nerves of the infraspinatus

Answer 9

Suprascapular nerve (C5,6)

Question 10

Name the nerves of the teres minor

Answer 10

Axillary nerve (C5,6)

Question 11

Name the nerves of the subscapularis

Answer 11

Upper and lower subscapular nerves (C5,6)

Question 12

Name the nerves of the pectoralis major

Answer 12

Lateral (C5-C7) and medial (C8-T1) pectoral nerve

Question 13

Name the nerves of the pectoralis minor

Answer 13

Medial pectoral nerve (C8, T1)

Question 14

Name the nerves of the serratus anterior

Answer 14

Long thoracic nerve (C5-C8)

Question 15

Name the nerves of the subclavius

Answer 15

Nerve to subclavius (C5,C6)

Question 16

Name the nerves of the coracobrachialis

Answer 16

Musculocutaneous nerve (C5-C7)

Question 17

Name the nerves of the biceps brachii

Answer 17

Musculocutaneous nerve (C5-C7)

Question 18

Name the nerves of the brachialis

Answer 18

Musculocutaneous nerve (C5-C7)

Question 19

Name the nerves of the triceps brachii

Answer 19

Radial nerve (C5-T1)

Question 20

Name the nerves of the anconeus

Answer 20

Radial nerve (C5-T1)

Question 21

Name the actions of the trapezius

Answer 21

-Superior fibers: Elevates, rotates scapula superiorly and extends head and neck; (UL) contralateral rotation of head and neck, lateral flexion to same side
-Middle fibers: Retracts scapula
-Inferior fibers: Depresses scapula and superiorly rotates scapula

Question 22

Name the actions of the latissimus dorsi

Answer 22

Extends, adducts, and medially rotates the humerus and assists with forced inspiration

Question 23

Name the actions of the levator scapulae

Answer 23

Elevates scapula, rotates scapula inferiorly. If shoulder is fixed, extension and lateral flexion of cervical spine

Question 24

Name the actions of the rhomboideus minor

Answer 24

Retracts, elevates, and rotates scapula inferiorly

Question 25

Name the actions of the rhomboideus major

Answer 25

Retracts, elevates, and rotates scapula inferiorly

Question 26

Name the actions of the deltoid

Answer 26

-Anterior: Flexion and medial rotation of humerus at GH joint. Abducts humerus at GH joint
-Middle: Abducts humerus at GH joint
-Posterior: Extension and lateral rotation of humerus at GH joint. Abducts humerus at GH joint

Question 27

Name the actions of the teres major

Answer 27

Adducts and medially rotates the humerus at GH joint

Question 28

Name the actions of the supraspinatus

Answer 28

Initiates and assists deltoid in abduction of humerus at GH joint and stabilizes GH joint

Question 29

Name the actions of the infraspinatus

Answer 29

Lateral rotation of humerus at GH joint and stabilizes GH joint

Question 30

Name the actions of the teres minor

Answer 30

Lateral rotation of humerus at GH joint and stabilizes GH joint

Question 31

Name the actions of the subscapularis

Answer 31

Medial rotation of humerus at GH joint and stabilizes GH joint

Question 32

Name the actions of pectoralis major

Answer 32

Adducts, medially rotates, and flexes humerus at GH joint

Question 33

Name the actions of the pectoralis minor

Answer 33

Depresses and draws scapula anteriorly. Elevates ribs when scapula is fixed

Question 34

Name the actions of the serratus anterior

Answer 34

Protracts scapula, rotates scapula superiorly, and elevates ribs when scapula is fixed

Question 35

Name the actions of the subclavius

Answer 35

Depresses and stabilizes clavicle

Question 36

Name the actions of the coracobrachialis

Answer 36

Flexion and adduction of humerus at GH joint “horizontal flexion”

Question 37

Name the actions of the biceps brachii

Answer 37

-Short head: Flexion at elbow joint and supination at radioulnar joint
-Long head: Flexion at GH joint

Question 38

Name the actions of the brachialis

Answer 38

Flexion at elbow joint

Question 39

Name the actions of the triceps brachii

Answer 39

Extension of elbow joint and long head assists with extension at GH joint

Question 40

Name the actions of the anconeus

Answer 40

Extension at elbow joint and stabilizes elbow joint during supination and pronation