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Muscles of the upper limb and their actions
Muscles of the upper limb and their actions
52
Anatomy
Undergraduate 2
10/13/2010

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Cards

Term
upper trapezius
Definition
elevation of the scapula
Term
middle trapezius
Definition
retraction of the scapula
Term
lower trapezius
Definition
depression of scapula
Term
levator scapulae
Definition
elevation of scapula
Term
rhomboid minor
Definition
Retraction and downward (medial) rotation of the scapula
Term
rhomboid major
Definition

Retraction and downward (medial) rotation of the scapula

Term
latissimus dorsi
Definition
extends, adducts and medially rotates the arm
Term
serratus anterior
Definition
protraction and upward rotation of scapula
Term
pectoralis minor
Definition
protraction and downwad (medial) rotation of scapula
Term
pectoralis major
Definition
flexes, adducts and medially rotates shoulder joint
Term
supraspinatus
Definition
0-30 degree abduction of the shoulder joint
Term
infraspinatus
Definition
lateral rotation of the arm
Term
subscapularis
Definition
medial rotation of arm
Term
teres major
Definition
extends, adducts, medially rotates arm
Term
teres minor
Definition
lateral rotation of arm
Term
anterior deltoid
Definition
 flexes and adducts shoulder joint
Term
posterior deltoid
Definition
extends and abducts shoulder joint
Term
middle deltoid
Definition
30-90 degree abduction of shoulder joint
Term
brachialis
Definition
PRIME flexor of the elbow
Term
coracobrachialis
Definition
flexes and adducts the shoulder joint
Term
Biceps brachii
Definition

Weal flexor of the shoulder

flexor of the elbow

Term
triceps brachii
Definition

Weak extensor of the shoulder joint

Prime extensor of the elbow

Term
brachioradialis
Definition

stabilizes elbow

assists in pronation and supination

flexes the elbow when the forearm is in the relaxed position

 

Term
supinator
Definition
supination of the forearm
Term
extensor carpi radialis longus
Definition
extension and abduction of the wrist
Term
extensor carpi radialis brevis
Definition
extension and abduction of the wrist
Term
extensor carpi ulnaris
Definition
extension and adduction of the wrist
Term
extensor pollicis brevis
Definition
extension of the thumb
Term
abductor pollicis longus
Definition
abduction of the thumb
Term
extensor pollicis longus
Definition
extension of the thumb
Term
extensor digitorum communis
Definition
extension of the fingers
Term
Extensor indicis
Definition
Extends the index finger
Term
extensor digiti minimi
Definition
extends little finger
Term
Pronator teres
Definition
pronation of the forearm
Term
pronator quadratus
Definition
pronation of the forearm (at wrist)
Term
flexor carpi radialis
Definition
flexion and abduction of the wrist
Term
palmaris longus
Definition

tenses palmar aponeurosis 

weak flexor of the wrist

Term
flexor pollicis longus
Definition
flexes thumb
Term
flexor digitorum superficialis
Definition
flexion of fingers at MP and PIP joints
Term
abductor pollicis brevis
Definition
abducts thumb
Term
flexor pollicis brevis
Definition
flexes thumb
Term
opponens pollicis
Definition
opposition of thumb
Term
lumbricals (lateral 2)
Definition

flexes at MP joints

Extends at PIP and DIP joints

Term
flexor carpi ulnaris
Definition
flexion and adduction of the wrist
Term
flexor digitorum profundus (medial half)
Definition
flexes fingers #4 and #5 at MP, PIP, and DIP joints
Term
Abductor digiti minimi
Definition
Abducts little finger
Term
Flexor digiti minimi
Definition
flexes little finger
Term
opponens digiti minimi
Definition
opposition of little finger
Term
adductor pollicis
Definition
adducts thumb
Term
lumbricals (medial 2)
Definition
flexes at PIP and DIP joints
Term
Palmar interossei
Definition
adduct fingers
Term
dorsal interossei
Definition
abduct fingers
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