Upper Extremity Muscles Origin/ Insertion

Question 1

Biceps brachii (O)

Answer 1

Tubercle above glenoid cavity (long head), coracoid process (short head)

Question 2

Biceps brachii (I)

Answer 2

Radial tuberosity

Question 3

Brachialis (O)

Answer 3

Distal anterior surface of humerus

Question 4

Brachialis (I)

Answer 4

Coronoid process of ulna, capsule of elbow joint

Question 5

Triceps brachii (O)

Answer 5

Projection inferior to glenoid cavity (long head), posterior surface of humerus (lateral and medial heads)

Question 6

Triceps brachii (I)

Answer 6

Olecranon process

Question 7

Brachioradialis (O)

Answer 7

Lateral border of distal end of humerus

Question 8

Brachioradialis (I)

Answer 8

Base of styloid process of radius

Question 9

Pronator teres (O)

Answer 9

Medial epicondyle, coronoid process

Question 10

Pronator teres (I)

Answer 10

Midlateral surface of radius

Question 11

Flexor carpi radialis (O)

Answer 11

Medial epicondyle

Question 12

Flexor carpi radialis (I)

Answer 12

Base of 2nd and 3rd metacarpals

Question 13

Palmaris longus (O)

Answer 13

Medial epicondyle

Question 14

Palmaris longus (I)

Answer 14

Deep fascia of palm

Question 15

Flexor carpi ulnaris (O)

Answer 15

Medial epicondyle, olecranon process and posterior surface of ulna

Question 16

Flexor carpi ulnaris (I)

Answer 16

Some carpals, base of 5th metacarpal

Question 17

Flexor digitorum superficialis (O)

Answer 17

Medial epicondyle, coronoid process, anterior surface of radius

Question 18

Flexor digitorum superficialis (I)

Answer 18

Middle phalanges of each finger

Question 19

Extensor carpi radialis (O)

Answer 19

Lateral supracondylar ridge of humerus

Question 20

Extensor carpi radialis (I)

Answer 20

Base of second metacarpal

Question 21

Extensor digitorum (O)

Answer 21

Lateral epicondyle

Question 22

Extensor digitorum (I)

Answer 22

Distal and middle phalanges of each finger

Question 23

Extensor carpi ulnaris (O)

Answer 23

Lateral epicondyle, posterior border of ulna

Question 24

Extensor carpi ulnaris (I)

Answer 24

Base of 5th metacarpal

Question 25

Abductor pollicis brevis (O)

Answer 25

Deep fascia of palm, some carpals

Question 26

Abductor pollicis brevis (I)

Answer 26

Lateral side of proximal phalanx of thumb

Question 27

Flexor pollicis brevis (O)

Answer 27

Deep fascia of palm, some carpals

Question 28

Flexor pollicis brevis (I)

Answer 28

Lateral side of proximal phalanx of thumb