Lab Exam Muscles of Arm

Question 1

Anterior Deltoid (Origin)

Answer 1

Lateral 1/3 of clavicle

Question 2

Medial Deltoid (Origin)

Answer 2

Acromion Process

Question 3

Posterior Deltoid (Origin)

Answer 3

Spine of scapula

Question 4

Deltoid (Insertion)

Answer 4

Deltoid tuberosity of humerus

Question 5

Deltoid (Action)

Answer 5

Abducts, extends, and flexes the arm

Question 6

Biceps brachii [Long head] (Origin)

Answer 6

Supraglenoid tubercle of scapula

Question 7

Biceps brachii [Short head] (Origin)

Answer 7

Coracoid process of scapula

Question 8

Bicep brachii [Long head and Short head] (Insertion)

Answer 8

Radial tuberosity

Question 9

Bicep brachii [Long head and Short head] (Action)

Answer 9

Flexes and supinates the arm

Question 10

Brachialis (Origin)

Answer 10

Anterior surface of humerus

Question 11

Brachialis (Insertion)

Answer 11

Tuberosity of ulna, coronoid process of ulna

Question 12

Brachialis (Action)

Answer 12

Flexes elbow

Question 13

Flexor carpi ulnaris (Origin)

Answer 13

Medial epicondyle of humerus

Question 14

Flexor carpi ulnaris (Insertion)

Answer 14

Pisiform bone, hook of hamate, base of 5th metacarpal

Question 15

Flexor carpi ulnaris (Action)

Answer 15

Flex and adduct wrist / ulnar deviation

Question 16

Palmaris longus (Origin)

Answer 16

Medial epicondyle of humerus

Question 17

Palmaris longus (Insertion)

Answer 17

Palmar aponeurosis

Question 18

Palmaris longus (Action)

Answer 18

Flex wrist

Question 19

Flexor carpi radialis (Origin)

Answer 19

Medial epicondyle of humerus

Question 20

Flexor carpi radialis (Insertion)

Answer 20

Bases of 2nd and 3rd metacarpal bones

Question 21

Flexor carpi radialis (Action)

Answer 21

Flexes and abducts wrist / radial deviation

Question 22

Flexor digitorium superficialis (Origin)

Answer 22

Medial epicondyle of humerus

Question 23

Flexor digitorium superficialis (Insertion)

Answer 23

Both sides of middle phalanges of the 4 fingers

Question 24

Flexor digitorium superficialis (Action)

Answer 24

Flexes middle phalanges

Question 25

Brachioradialis (Origin)

Answer 25

Lateral epicondyle of humerus

Question 26

Brachioradialis (Insertion)

Answer 26

Styloid process of radius

Question 27

Brachioradialis (Action)

Answer 27

Flex forearm

Question 28

Supraspinatus (Origin)

Answer 28

Supraspinous fossa of scapula

Question 29

Supraspinatus (Insertion)

Answer 29

Greater tuberosity of the humerus

Question 30

Supraspinatus (Action)

Answer 30

Abduct the arm

Question 31

Infraspinatus (Origin)

Answer 31

Infraspinous fossa of scapula

Question 32

Infraspinatus (Insertion)

Answer 32

Greater tuberosity of the humerus

Question 33

Infraspinatus (Action)

Answer 33

Laterally rotates the arm

Question 34

Subscapularis (Origin)

Answer 34

Anterior surface of scapula

Question 35

Subscapularis (Insertion)

Answer 35

Lesser tuberosity of the humerus

Question 36

Subscapularis (Action)

Answer 36

Medially rotates the arm

Question 37

Teres major [not rotator cuff] (Origin)

Answer 37

Lateral border of scapula

Question 38

Teres major [not rotator cuff] (Insertion)

Answer 38

Medial lip of intertubercular groove of the humerus

Question 39

Teres major [not rotator cuff] (Action)

Answer 39

Extends, abducts, and medially rotates the humerus (swimming)

Question 40

Teres minor (Origin)

Answer 40

Lateral border of scapula

Question 41

Teres minor (Insertion)

Answer 41

Greater tuberosity of the humerus

Question 42

Teres minor (Action)

Answer 42

Laterally rotates the arm

Question 43

Triceps brachii (Origin)

Answer 43

Infraglenoid tubercle of scapula, lateral and medial surface of humerus

Question 44

Triceps brachii (Insertion)

Answer 44

Olecranon process of ulna

Question 45

Triceps brachii (Action)

Answer 45

Extends elbow

Question 46

Extensor carpi radialis longus (Origin)

Answer 46

Lateral epicondyle of humerus

Question 47

Extensor carpi radialis longus (Action)

Answer 47

Extends and abducts the hand

Question 48

Extensor carpi radialis brevis (Origin)

Answer 48

Lateral epicondyle of humerus

Question 49

Extensor carpi radialis brevis (Action)

Answer 49

Extends and abducts the hand

Question 50

Extensor digitorium communis (Origin)

Answer 50

Lateral epicondyle of the hand

Question 51

Extensor digitorium communis (Action)

Answer 51

Extends fingers

Question 52

Extensor carpi ulnaris (Origin)

Answer 52

Lateral epicondyle of humerus

Question 53

Extensor carpi ulnaris (Action)

Answer 53

Extends and adducts the hand