Muscle Actions Flashcards
opponens digiti minimi m.
5th digit opposition
posterior scalene m.
2nd rib elevation, lateral neck flexion
anconeus m.
elbow extension
FPL
MCP, IP thumb flexion
serratus anterior m.
scapula protraction, superior rotation
ECRL
wrist extension, radial deviation
ECRB
wrist extension, radial deviation
Sternocleidomastoid m.
head rotation to opposite side; neck flexion
palmaris brevis m.
draws skin of ulnar side of hand toward center of palm
middle scalene m.
1st rib elevation, lateral neck flexion
obliquus capitis superior m.
head extension
anterior scalene m.
1st rib elevation, lateral neck flexion
rectus capitus posterior major m.
head rotation, extension
pronator teres m.
pronation
supraspinatus m.
initiates arm aBduction
FDP
MCP, PIP, DIP flexion
FCR
wrist flexion, radial deviation
abductor pollicis longus m.
thumb aBduction at carpometacarpal joint
extensor pollicis longus m.
thumb extension at IP joint
pec major m.
arm flexion, aDduction, medial rotation
latissimus dorsi m.
arm extension, medial rotation
trapezius m.
scapula elevation, depression, superior rotation, retraction
FDS
MCP, PIP flexion
opponens pollicis m.
thumb opposition
adductor pollicis m.
thumb aDduction
subscapularis m.
arm medial rotation, extension
deltoid m.
arm aBduction; anterior fibers: arm flexion, medial rotation; posterior fibers: arm extension, lateral rotation
EDM
extends: MCP, PIP, DIP joints of 5th digit
extensor pollicis brevis m.
thumb extension at MP joint
abductor pollicis brevis m.
thumb aBduction
biceps brachii m.
arm flexion (long head); elbow flexion, supination
infraspinatus m.
arm lateral rotation
ECU
wrist extension, ulnar deviation
brachioradialis m.
elbow flexion, pronation, supination
rectus capitus posterior minor m.
head extension
brachialis m.
elbow flexion
FCU
wrist flexion, ulnar deviation
teres minor m.
arm lateral rotation
palmaris longus m.
wrist flexion
triceps brachii m.
arm extension, adduction (long head); elbow extension
obliquus capitus inferior m.
head rotation, extension
ED
extends: MCP, PIP, DIP joints 2-5, wrist
EI
extends index finger at MCP, PIP, DIP joints