actions E2 muscles

Question 1

neck lateral flexion (3)

Answer 1

anterior + middle + posterior scalene

Question 2

rib elevation (3)

Answer 2

1st rib: anterior/middle scalene
2nd rib: posterior scalene

Question 3

shoulder flexion (1)

Answer 3

coracobrachialis

Question 4

shoulder adduction (1)

Answer 4

coracobrachialis

Question 5

shoulder: resists dislocation (3)

Answer 5

biceps brachii (short head), coracobrachialis, triceps brachii (long head)

Question 6

elbow/forearm flexion (4)

Answer 6

biceps brachii, brachialis, brachioradialis, pronator teres (assists)

Question 7

elbow/forearm extension (2)

Answer 7

triceps brachii, anconeus (assists)

Question 8

elbow/forearm supination (3)

Answer 8

biceps brachii, supinator, brachioradialis (assists)

Question 9

elbow/forearm pronation (4)

Answer 9

pronator teres, pronator quadratus, brachioradialis (assists), anconeus (assists)

Question 10

wrist/hand flexion (3)

Answer 10

FCR, FCU, FDP*

Question 11

wrist/hand extension (4)

Answer 11

ECRL, ECRB, ECU, EI*

Question 12

wrist/hand radial deviation (3)

Answer 12

FCR, ECRL, ECRB

Question 13

wrist/hand ulnar deviation (2)

Answer 13

FCU, ECU

Question 14

wrist/hand fist clenching (2)

Answer 14

ECRL, ECU (active during)

Question 15

long digits flexion (3)

Answer 15

FDS (not at DIP), FDP, FDM (5th digit, MCP)

Question 16

long digits extension (3)

Answer 16

extensor digitorum, extensor digiti minimi (MCP), extensor indicis

Question 17

long digits abduction (2)

Answer 17

abductor digiti minimi (MCP), dorsal interossei (digits 2-4)

Question 18

long digits adduction (1)

Answer 18

palmar interossei (digit 2-5)

Question 19

opposition (5th digit) (1)

Answer 19

opponens digiti minimi (CMC)

Question 20

lumbrical grip (MCP flex, IPs extend) (sock puppet) (3)

Answer 20

lumbrical, PAD, DAB

Question 21

thumb flexion (2)

Answer 21

FPL, FPB

Question 22

thumb extension (3)

Answer 22

EPL, EPB (not at IP joint), abductor pollicis longus

Question 23

thumb abduction (CMC) (2)

Answer 23

abductor pollicis longus, abductor pollicis brevis

Question 24

thumb adduction (CMC, MCP) (1)

Answer 24

adductor pollicis

Question 25

thumb opposition (3)

Answer 25

opponens pollicis, abductor pollicis brevis, FPB*