Neuro System Nerve and Nerve Root of Upper Extremity Muscles 1

Question 1

Nerve, Root, Action of Supraspinatus muscle

Answer 1

Nerve - Suprascapular

Root - C4 - C5

Action - Arm: Abduction

Question 2

Nerve, Root, Action of Infraspinatus muscle

Answer 2

Nerve - Suprascapular

Root - C5-C6

Action - Arm: External rotation

Question 3

Nerve, Root, Action of Deltoid muscle

Answer 3

Nerve - Axillary

Root - C5-C6

Action - Arm: Flexion, extension, abduction, ext. rot.

Question 4

Nerve, Root, Action of Teres major muscle

Answer 4

Nerve - Lower subscap.

Root - C5-C6

Action - Arm: Extension, adduction, internal rotation

Question 5

Nerve, Root, Action of Teres minor muscle

Answer 5

Nerve - Axillary

Root - C5-C6

Action - Arm: External rotation

Question 6

Nerve, Root, Action of Subscapularis muscle

Answer 6

Nerve - Upper subscap.

Root - C5-C6

Action - Arm: Internal rotation

Question 7

Nerve, Root, Action of Pectoralis major muscle

Answer 7

Nerve - Lateral pectoral

Root - C5-C7

Action - Arm: Flexion, adduction, internal rotation

Question 8

Nerve, Root, Action of Latissimus dorsi muscle

Answer 8

Nerve - Thoracodorsal

Root - C6-C8

Action - Arm: Extension, adduction, internal rotation

Question 9

Nerve, Root, Action of Coracobrachialis muscle

Answer 9

Nerve - Musculocutan.

Root - C6-C7

Action - Arm: Flexion, adduction

Question 10

Nerve, Root, Action of Trapezius muscle

Answer 10

Nerve - Spinal accessory

Root - CN XI

Action - Scapular: Elevate, depress, retract, lat. rot.

Question 11

Nerve, Root, Action of Rhomboids muscle

Answer 11

Nerve - Dorsal scapular

Root - C4-C5

Action - Scapular: Retract, elevate, medially rotate

Question 12

Nerve, Root, Action of Levator scapula muscle

Answer 12

Nerve - Dorsal scapular

Root - C3-C5

Action - Scapular: Retract, elevate, medial rotation

Question 13

Nerve, Root, Action of Pectoralis minor muscle

Answer 13

Nerve - Medial pectoralis

Root - C8-T1

Action - Scapular: Protract, depress, medial rotation

Question 14

Nerve, Root, Action of Serratus anterior muscle

Answer 14

Nerve - Long thoracic

Root - C5-C7

Action - Scapular: Protract, lateral rotation

Question 15

Nerve, Root, Action of Biceps muscle

Answer 15

Nerve - Musculocut.

Root - C5-C6

Action - Elbow: Flexion, supination

Question 16

Nerve, Root, Action of Triceps muscle

Answer 16

Nerve - Radial

Root - C7-C8

Action - Elbow: Extension

Question 17

Nerve, Root, Action of Brachialis muscle

Answer 17

Nerve - Musculocut.

Root - C5-C6

Action - Elbow: Flexion

Question 18

Nerve, Root, Action of Brachioradialis muscle

Answer 18

Nerve - Radial

Root - C5-C6

Action - Elbow: Flexion, supination

Question 19

Nerve, Root, Action of Anconeus muscle

Answer 19

Nerve - Radial

Root - C7-C8

Action - Elbow: Extension

Question 20

Nerve, Root, Action of Supinator muscle

Answer 20

Nerve - Radial

Root - C6

Action - Elbow: Supination

Question 21

Nerve, Root, Action of Pronator teres muscle

Answer 21

Nerve - Median

Root - C6-C7

Action - Elbow: Flexion, pronation

Question 22

Nerve, Root, Action of Pronator quadratus muscle

Answer 22

Nerve - Median

Root - C8-T1

Action - Elbow: Pronation

Question 23

Nerve, Root, Action of Flexor carpi radialis muscle

Answer 23

Nerve - Median

Root - C6-C7

Action - Elbow: Flex, pronation. Wrist: Flex, radial dev.

Question 24

Nerve, Root, Action of Palmaris longus muscle

Answer 24

Nerve - Median

Root - C7-C8

Action - Elbow: Flexion. Wrist: Flexion

Question 25

Nerve, Root, Action of Flexor carpi ulnaris muscle

Answer 25

Nerve - Ulnar Root - C8 Action - Wrist: Flexion, ulnar deviation

Question 26

Nerve, Root, Action of Extensor carpi radialis longus and brevis muscles

Answer 26

Nerve - Radial Root - C6-C7 Action - Wrist: Extension, radial deviation

Question 27

Nerve, Root, Action of Extensor carpi ulnaris muscle

Answer 27

Nerve - Radial Root - C7-C8 Action - Wrist: Extension, ulnar deviation

Question 28

Nerve, Root, Action of Flexor digitorum profundis muscle

Answer 28

Nerve - Median Root - C8-T1 Action - Fingers: flexion (mcp, pip, dip)

Question 29

Nerve, Root, Action of Flexor digitorum superficialis muscle

Answer 29

Nerve - Median Root - C7-T1 Action - Fingers: Flexion (mcp, pip)

Question 30

Nerve, Root, Action of Abductor policis brevis muscle

Answer 30

Nerve - Median Root - C8-T1 Action - Thumb: Flexion, abduction, opposition

Question 31

Nerve, Root, Action of Lumbricals (fingers 1-2) muscle

Answer 31

Nerve - Median: 1-2 Root - C8-T1 Action - Fingers: Flexion (mcp), extension (IPs)

Question 32

Nerve, Root, Action of Flexor policis longus and brevis muscle

Answer 32

Nerve - Median Root - C6-C7 Action - Thumb: Flexion (Brevis: opposition)

Question 33

Nerve, Root, Action of Opponens policis muscle

Answer 33

Nerve - Median Root - C8 Action - Finger and thumb: Opposition

Question 34

Nerve, Root, Action of Opponens digiti minimi muscle

Answer 34

Nerve - Ulnar Root - C8-T1 Action - Finger and thumb: Opposition

Question 35

Nerve, Root, Action of Palmar interossei muscle

Answer 35

Nerve - Ulnar Root - C8-T1 Action - Fingers: Adduction, Flex (mcp), extend (IPs)

Question 36

Nerve, Root, Action of Dorsal interossei muscle

Answer 36

Nerve - Ulnar Root - C8-T1 Action - Fingers: Abduction, Flex (mcp), extend (IPs)

Question 37

Nerve, Root, Action of Lumbricals (fingers 4-5) muscles

Answer 37

Nerve - Ulnar Root - C8-T1 Action - Fingers: Flexion (mcp), extension (IPs)

Question 38

Nerve, Root, Action of Adductor policis muscle

Answer 38

Nerve - Ulnar Root - C6-C8 Action - Thumb: Adduction, opposition

Question 39

Nerve, Root, Action of Extensor digitorum muscle

Answer 39

Nerve - Radial Root - C7-C8 Action - Fingers: Extension (mcp, pip, dip)

Question 40

Nerve, Root, Action of Extensor digitorum minimi muscle

Answer 40

Nerve - Radial Root - C7-C8 Action - Fingers: Extension (mcp, pip, dip)

Question 41

Nerve, Root, Action of Extensor digitorum indices muscle

Answer 41

Nerve - Radial Root - C7-C8 Action - Index finger: Extension

Question 42

Nerve, Root, Action of Extensor policis longus and brevis muscle

Answer 42

Nerve - Radial Root - C7-C8 Action - Thumb: Extension

Question 43

Nerve, Root, Action of Abductor policis longus muscle

Answer 43

Nerve - Radial Root - C7-C8 Action - Thumb: Abduction, extension