Musculoskeletal Anatomy of Upper Extremity Powerpoint Musculature

Question 1

Pectoralis major

Answer 1

Function: Flexion of humerus at shoulder, adduction of humerus at shoulder, medial rotation of humerus at shoulder
Insertion: clavicle and sternum to intertubular groove of humerus
Nerve: medial and lateral pectoral nerves

Question 2

Pectoralis minor

Answer 2

Function: Protraction of scapula at scapulothoracic joint, elevate ribs, depress scapula a scapulothoracic joint
Insertion: ribs 3-5 to corocoid process of scapula
Nerve: medial pectoral nerves

Question 3

Deltoid

Answer 3

Function: Flexion, extension, medial rotation, lateral rotation, abduction of humerus at shoulder joint
Insertion: clavicle/acromion to deltoid tuberocity of humerus
Nerve: axillary

Question 4

Teres major

Answer 4

Function: adduction, medial rotation, and extension of humerus at shoulder joint
Insertion: Lateral border of scapula to intertubular groove of humerus
Nerve: subscapular

Question 5

Coracobrachialis

Answer 5

Function: adduction of humerus at shoulder joint
Insertion: corocoid process to medial humerus
Nerve: musculocutaneous

Question 6

Supraspinatus

Answer 6

Function: Abduction of humerus at shoulder joint
Insertion: supraspinous fossa of scapula to greater tubercle of humerus
Nerve: suprascapular

Question 7

Infraspinatus

Answer 7

Function: Extension of humerus at shoulder joint
Insertion: infraspinous fossa of scapula to greater tubercle of humerus
Nerve: suprascapular

Question 8

Teres minor

Answer 8

Function: adduction of humerus at shoulder joint
Insertion: lateral scapula to greater tubercle of humerus
Nerve: axillary

Question 9

Subscapularis

Answer 9

Function: adduction of humerus at shoulder joint
Insertion: subscapular fossa to lesser tubercle
Nerve: subscapular nerve

Question 10

Biceps brachii

Answer 10

Function: supination of radius at elbow, flexion of forearm at elbow, flexion of humerus at shoulder
Insertion: radius to corocoid (short head) or glenoid fossa (long head)

Question 11

Brachialis

Answer 11

Function: flexion of forearm at elbow
Insertion: humerus to ulna
Nerve: musculocutaneous

Question 12

Triceps brachii

Answer 12

Function: extension of forearm at elbow, adduction of humerus at femur
Insertion: Inferior glenoid (long head) posterior humerus (lateral and medial head) to olecranon process
Nerve: radial nerve

Question 13

Anconeus

Answer 13

Function: extension of forearm at elbow
Insertion: lateral epicondyle of humerus to olecranon process
Nerve: radial

Question 14

Brachioradialis

Answer 14

Function: flexion of forearm at elbow
Insertion: radial styloid process to lateral epicondyle of humerus
Nerve: radial

Question 15

Pronator teres

Answer 15

Function: pronation of forearm at elbow
Insertion: medial epicondyle of humerus to radial shaft
Nerve: median

Question 16

Supinator

Answer 16

Function: supination of forearm at elbow
Insertion: lateral epicondyle of humerus to radial shaft
Nerve: dorsal interosseous (radial nerve)

Question 17

Flexor carpi radialis

Answer 17

Function: flexion of hand at wrist, radial deviation of hand at wrist
Insertion: medial epicondyle to metacarpals
Nerve: median

Question 18

Flexor carpi ulnaris

Answer 18

Function: flexion of hand at wrist, ulnar deviation of hand at wrist
Insertion: medial epicondyle to metacarpals
Nerve: ulnar

Question 19

Palmaris longus

Answer 19

Function: flexion of hand at wrist (barely relevant)
Insertion: medial epicondyle to palmar aponeurosis
Nerve: median

Question 20

Flexor digitorum profundus

Answer 20

Function: flexion of hand at wrist, flexion of phalanges at DIP and PIP, and MP joints
Insertion: interosseous ulna to distal phalanges digits II-V
Nerve: Median nerve

Question 21

Flexor pollucis longus

Answer 21

Function: flexion of the first digit at the IP joint
Insertion: radius to distal phalanx digit 1
Nerve: median

Question 22

Flexor digitorum superficialis

Answer 22

Function: flexion of phalanges at PIP and MP joints and flexion of hand at wrist
Insertion: radius to middle phalanges digits II-V
Nerve: median

Question 23

Extensor carpi radialis brevis

Answer 23

Function: extension of hand at wrist, radial deviation of hand at wrist
Insertion: lateral epicondyle to metacarpals
Nerve: radial

Question 24

Extensor carpi radialis longus

Answer 24

Function: extension of hand at wrist, radial deviation of hand at wrist
Insertion: lateral epicondyle to metacarpals
Nerve: radial

Question 25

Extensor digitorum

Answer 25

Function: extension of phalanges at MP joint
Insertion: lateral epicondyle to distal phalanges II-V
Nerve: radial

Question 26

Abductor pollocis longus

Answer 26

Function: abduction and extension of digit I at MP joint
Insertion: posterior trapezium and radius to metacarpal I
Nerve: radial

Question 27

Extensor pollocis longus

Answer 27

Function: Extension of digit 1 at MP joint
Insertion: shaft of ulna to distal phalanx 1
Nerve: radial

Question 28

Extensor pollocis brevis

Answer 28

Function: extension of digit 1 at MP joint
Insertion: shaft of radius to proximal phalanx 1
nerve: radial

Question 29

Extensor carpi ulnaris

Answer 29

Function: extension of hand at wrist
Insertion: lateral epicondyle to 5th metacarpal
Nerve: radial

Question 30

Extensor digiti minimi

Answer 30

Function: extension of digit 5 at the MCP joint
Insertion: lateral epicondyle to distal phalanx of digit 5
Nerve: radial

Question 31

Extensor indices

Answer 31

Function: extension of digit 2 at the mcp joint
Insertion: posterior ulna to distal phalanx of digit 2
Nerve: radial