Muscles that move the arm, forearm, wrist, and hand.

Question 1

This muscle’s origin is the short head of the coracoid process and long head of the supraglenoid tubercle. The insertion is the tuberosity of the radius. Action is flexion at shoulder and elbow; supination.

Answer 1

Biceps brachii

Question 2

This muscle’s action is flexion at the elbow. Its insertion is the tuberosity of the ulna and the origin is the anterior, distal surface of the humerus.

Answer 2

Brachialis

Question 3

This muscle inserts at the the styloid process of the radius, originates at the lateral epicondyle of the humerus, and the action is flexion of the elbow.

Answer 3

Brachioradialis

Question 4

This muscle originates at the superior, posterior, and lateral margins of the humerus and the scapula. The insertion is the olecranon of the ulna. The action is the extension of the elbow.

Answer 4

Triceps brachii

Question 5

This muscle’s action is pronation. It inserts at the anterior and lateral surface of distal portion of the radius. It originates at the medial surface of distal portion of the ulna.

Answer 5

Pronator quadratus

Question 6

This insertion of this muscle is the distal lateral surface of the radius, the origin is the medial epicondyle of the humerus and coronoid process of the ulna, the action is pronation.

Answer 6

Pronator teres

Question 7

This muscle’s origin is the lateral epicondyle of the humerus and ulna. It’s insertion is the anterior and lateral surface of the radius distal to the radial tuberosity. Action? SUPINation!

Answer 7

Supinator

Question 8

This muscle originates at the medial epicondyle of the humerus, inserts at the bases of the 2nd and 3rd metacarpal bones, and the action is flexion and abduction at the wrist.

Answer 8

Flexor carpi radialis

Question 9

This muscle originates at the medial epicondyle of the humerus and adjacent surfaces of the ulna, inserts at the pisiform bone, hamate bone, and base of the 5th metacarpal bone, its action is flexion and adduction at the wrist.

Answer 9

Flexor carpi ulnaris

Question 10

This muscle’s action is flexion at the wrist, its insertion is the tendinous sheet on the palm, and the origin is the medial epicondyle of the humerus.

Answer 10

Palmaris longus

Question 11

This muscle’s action is extension and abduction at the wrist, the insertion is the bases of the 2nd and 3rd metacarpal bones, and the origin is the distal lateral surface and lateral epicondyle of the humerus.

Answer 11

Extensor carpi radialis

Question 12

This muscle’s action is extension and adduction at the wrist, the insertion is the base of the 5th metacarpal bone, and the origin is the lateral epicondyle of the humerus and adjacent surface of the ulna.

Answer 12

Extensor carpi ulnaris

Question 13

The muscle originates at the lateral epicondyle of the humerus, inserts at the posterior surfaces of the phalanges, and the action is the extension at finger joints and wrist.

Answer 13

Extensor digitorum

Question 14

This muscle originates at the medial epicondyle of the humerus; anterior surfaces of the ulna and radius; medial and posterior surfaces of the ulna. It inserts at the distal phalanges and the action is flexion at finger joints and wrist.

Answer 14

Flexor digitorum

Question 15

This muscle’s origin is the coracoid process, it’s insertion is the medial margin of the shaft of the humerus, and the action is adduction and flexion at the shoulder.

Answer 15

Coracobrachialis

Question 16

This muscle’s origin is the clavicle and scapula, the insertion is the deltoid tuberosity of the humerus, and the action is abduction at the shoulder.

Answer 16

Deltoid

Question 17

This muscles’s origin is the spinous processes pf the lower thoracic vertebrae, ribs, and lumbar vertebrae, the insertion is the intertubercular groove of the humerus, and the action is extension, adduction, and medial rotation at the shoulder.

Answer 17

Latissimus dorsi

Question 18

This muscles’s insertion is the greater tubercle of the humerus, the origin is the cartilages of ribs 2-6, body of the sternum, and clavicle, and the action is flexion, adduction, and medial rotation at shoulder.

Answer 18

Pectoralis major

Question 19

This muscles’s insertion is the greater tubercle of the humerus, the origin is the supraspinous fossa of the scapula, and the action is abduction at the shoulder.

Answer 19

Infraspinatus

Question 20

This muscles’s origin is the subscapular fossa of the scapula, the insertion is the lesser tubercle of the humerus, and the action is medial rotation at the shoulder.

Answer 20

Subscapularis

Question 21

This muscles’s action is lateral rotation at the shoulder, its origin is the lateral border of the scapula, and the insertion is the greater tubercle of the humerus

Answer 21

Teres minor

Question 22

This muscles’s action is adduction and medial rotation at the shoulder, the origin is the inferior angle of the scapula, and the insertion is the intertubercular groove of the humerus.

Answer 22

Teres major