Upper Extremities AOIs (Elbow -> Hand)

Question 1

extensor carpi radialis brevis (action)

Answer 1

extension of the wrist

Question 2

extensor carpi radialis longus (action)

Answer 2

extension of the wrist

Question 3

extensor digitorum (action)

Answer 3

MCP, PIP, DIP joints; extension of the 4 digits

Question 4

extensor carpi ulnaris (action)

Answer 4

extension of the wrist

Question 5

extensor digiti minimi (action)

Answer 5

MCP, DIp, PIP joints of little finger; extension of the 5th digit

Question 6

abductor pollicis longus (action)

Answer 6

MCP of thumb; aBduction of the thumb

Question 7

extensor pollicis brevis (action)

Answer 7

MCP and IP of thumb; extension of the thumb

Question 8

extensor inidics (action)

Answer 8

MCP, PIP, and DIP of 2nd digit; extension of the 2nd digit

Question 9

extensor pollicis longus (action)

Answer 9

MCP and IP of thumb; extension of the thumb

Question 10

flexor carpi ulnaris (action)

Answer 10

flexion and aDduction of the wrist

Question 11

palmaris longus (action)

Answer 11

flexion of the wrist

Question 12

flexor carpi radialis (action)

Answer 12

flexion and aBduction of the wrist

Question 13

flexor digitorum superficialus (action)

Answer 13

MCP and PIP joints of 2nd to 5th digits; flexion of medial 4 digits

Question 14

flexor digitorum profundus (action)

Answer 14

MCP, PIP, and DIP joints of 2nd to 5th digit; flexion of fingers

Question 15

flexor pollicus longus (action)

Answer 15

MCP and IP of thumb; flexion of thumb

Question 16

pronator teres (action)

Answer 16

pronation of forearm

Question 17

pronator quadratus (action)

Answer 17

pronates the forearm

Question 18

supinator (action)

Answer 18

supination of the forearm

Question 19

abductor pollicus brevis (action)

Answer 19

CMC joint of thumb; aBduction of thumb

Question 20

flexor pollicis brevis (both) (action)

Answer 20

CMC joint of thumb; thumb flexion

Question 21

opponens pollicis (action)

Answer 21

CMC joint of thumb; opposition of thumb

Question 22

abductor digiti minimi (action)

Answer 22

MCP joint to little finger; flexion, aBduction
PIP and DIP joint of little finger; extension of little finger

Question 23

flexor digiti minimi brevis (action)

Answer 23

MCP joint of little finger; flexion of little finger

Question 24

opponens digiti minimi (action)

Answer 24

draws 5th metacarpal in palmar direction (opposition)

Question 25

lumbricals (all) (action)

Answer 25

MCP joint; flexion of the 2nd-5th digit PIP and DIP joints; extension of the 2nd-5th digits

Question 26

extensor carpi radialis brevis (origin -> insertion)

Answer 26

lateral epicondyle of humerus -> 2nd metacarpal

Question 27

extensor carpi radialis longus (origin -> insertion)

Answer 27

lateral supracondylar ridge of the humerus -> 3rd metacarpal

Question 28

estensor digitorum (origin -> insertion)

Answer 28

lateral epicondule of the humerus -> medial 4 digits

Question 29

extensor carpi ulnaris (origin -> insertion)

Answer 29

lateral epicondyle of the humers -> 5th metacarpal

Question 30

extensor digiti minimi (origin -> insertion)

Answer 30

lateral epicondule of the humerus -> 5th digit

Question 31

abductor pollicis longus (origin -> insertion)

Answer 31

interosteus membran -> 1st metacarpal

Question 32

extensor pollicis brevis (origin -> insertion)

Answer 32

interosteus membrane -> proximal phalanx of the thumb

Question 33

extensor indicis (origin -> insertion)

Answer 33

distal ulna -> index finger phalanges

Question 34

extensor pollicis longus (origin -> insertion)

Answer 34

interosteus membrane -> distal phalanx of the thumb

Question 35

flexor carpi ulnaris (origin -> insertion)

Answer 35

medial epicondyle of humerus -> pisiform and hook of the hamate

Question 36

palmaris longus (origin -> insertion)

Answer 36

medial epicondyle of humerus -> aponerosis

Question 37

flexor carpi radialis (origin -> insertion)

Answer 37

medial epicondyle of humerus -> 2nd metacarpal

Question 38

flexor digitorum superficialis (origin -> insertion)

Answer 38

medial epicondyle of humerus -> middle phalanges

Question 39

flexor digitorum profundus (origin -> insertion)

Answer 39

anterior surface of the ulna -> distal phalages

Question 40

flexor pollicus longus (origin -> insertion)

Answer 40

radius and interoseus membrane -> distal phalanx of thumb

Question 41

pronator teres (origin -> insertion)

Answer 41

medial epicondyle of humerus -> middle body of radius

Question 42

pronator quadratus (origin -> insertion)

Answer 42

anterior medial surface of the ulna -> anterior lateral surface of the radius

Question 43

supinator (origin -> insertion)

Answer 43

lateral epicondyle of the humerus and posterior surface of ulna -> posterior surface of radius

Question 44

abductor pollicus brevis (origin -> insertion)

Answer 44

scaphoid, trapezium, and flexor retinaculum -> base of proximal phalanx of 1st digit via radial sesomoid

Question 45

flexor pollicis brevis (superfical head) (origin -> insertion)

Answer 45

flexor retinaculum -> base of proximal phalanx of 1st digit via radial sesomoid

Question 46

flexor pollicis brevis (deep head) (origin -> insertion)

Answer 46

capitate and trapezium -> base of proximal phalanx of 1st digit via radial sesomoid

Question 47

opponens pollicis (origin -> insertion)

Answer 47

trapezium -> 1st metacarpal (radial border)

Question 48

abductor digiti minimi (origin -> insertion)

Answer 48

pisiform -> 5th proximal phalanx and dorsal digital expansion of 5th digit

Question 49

flexor digiti minimi brevis (origin -> insertion)

Answer 49

hook of hamate and flexor retinaculum -> base of 5th proximal phalanx

Question 50

opponens digiti minimi (origin -> insertion)

Answer 50

hook of hamate and flexor retinaculum -> 5th metacarpal (ulnar border)

Question 51

1st lumbrical (origin -> insertion)

Answer 51

tendons of flexor digitorum profundus (radial sides) -> 2nd proximal phalanx

Question 52

2nd lumbrical (origin -> insertion)

Answer 52

tendons of flexor digitorum profundus (radial sides) -> 3rd proximal phalanx

Question 53

3rd lumbrical (origin -> insertion)

Answer 53

tendons of flexor digitorum profundus (bipennatefrom medial and lateral sides) -> 4th proximal phalanx

Question 54

4th lumbrical (origin -> insertion)

Answer 54

tendons of flexor digitorum profundus (bipennatefrom medial and lateral sides) -> 5th proximal phalanx