Upper Extremity Muscles

Question 1

Assists deltoid in abduction of the humerus at the shoulder

Answer 1

Supraspinatus

Question 2

External rotation of the humerus at the shoulder joint

Answer 2

Infraspinatus

Question 3

Assists adduction and rotation of the arm laterally

Extends arm at shoulder and rotation of the arm externally

Answer 3

Teres minor

Question 4

Internal rotation of the arm at the shoulder

Answer 4

Subscapularis

Question 5

Abducts, flexes, extends, and rotates arm at the shoulder joint

Answer 5

Deltoid

Question 6

Multiple fibers in this large muscle move the scapula multi-directionally

Answer 6

Trapezius

Question 7

Elevates the scapula and rotates downward

Answer 7

Levator scapula

Question 8

Elevates and adducts scapula and rotates downward

Stabilizes scapula

Answer 8

Rhomboid major

Question 9

Adducts and rotates arm medially at the shoulder

Flexes arm at the shoulder joint

Answer 9

Pectoralis major

Question 10

Extends, adducts, and rotates arm medially at the shoulder joint

Draws arm downward and backward

Answer 10

Latissimus dorsi

Question 11

Extends arm at the shoulder joint

Assists with adduction and rotation of arm medially

Answer 11

Teres major

Question 12

Flexes and adducts arm at the shoulder

Answer 12

Coracobrachialis

Question 13

Flexes arm at the shoulder

Flexes and supinates forearm at the elbow

Answer 13

Biceps Brachii

Question 14

Flexes forearm at the elbow joint

Answer 14

Brachialis

Brachioradialis

Question 15

Extends forearm at the elbow joint

Extends arm at the shoulder

Answer 15

Triceps brachii

Question 16

Supinates forearm

Answer 16

Supinator

Question 17

Pronates forearm

Answer 17

Pronator teres

Question 18

Flexes and abducts hand at the wrist

Answer 18

Flexor carpi radialis

Question 19

Flexes and adducts hand at the wrist

Answer 19

Flexor carpi ulnaris

Question 20

Weakly flexes hand at the wrist joint

Answer 20

Palmaris

Question 21

Flexes hand at wrist

Flexes phalanges of each finger at the PIP joint

Answer 21

Flexor Digitorum Superficialis

Question 22

Flexes hand at wrist

Flexes phalanges of each finger at DIP joint

Answer 22

Flexor Digitorum Profundus

Question 23

Extends and abducts hand at the wrist joint

Answer 23

Extensor carpi radialis longus

Question 24

Extends and adducts hand at the wrist joint

Answer 24

Extensor carpi ulnaris

Question 25

Extends hand at wrist joint

Extends phalanges of each finger

Answer 25

Extensor digitorum