Shoulder/Arm Flashcards
Origin: clavicle
Insertion: deltoid tuberosity of humerus
Action: abducts arm
Deltoid
Origin: C7-T12
Insertion: spine of scapula
Action: fixes scapula
Trapezius
Origin: cartilages of ribs 1-7
insertion: crest of greater tubercle of humerus
Action: flexes arm
Pectoralis major
origin: ribs 3-5
insertion: coracoid process of scapula
action: raises ribs 3-5
Pectoralis minor
origin: ribs 10-12
insertion: intertubercular groove of humerus
action: extends arm
Latissimus dorsi
origin: supraspinous fossa
insertion: greater tubercle of humerus
action: helps stabilize shoulder joint
Supraspinatus
origin: infraspinous fossa
insertion: greater tubercle of humerus
action: stabilizes shoulder joint
Infraspinatus
origin: subscapular fossa
insertion: lesser tubercle of humerus
action: stabilizes shoulder joint
subscapularis
origin: lateral border of scapula
insertion: greater tubercle of humerus
action: stabilizes shoulder joint
Teres minor
origin: inferior angle of scapula
insertion: crest of lesser tubercle of humerus
action: extends arm
Teres major
origin: short head- coracoid process of scapula
insertion: radial tuberosity
action: flexes arm
biceps brachii
origin: lateral and posterior surface of humerus
insertion: olecranon process of ulna
action: extends arm
triceps brachii
origin: coracoid process of scapula
insertion: midmedial shaft of humerus
action: flexes arm
coracobrachialis
origin: anterior, distal surface of humerus
insertion: coronoid process of ulna
action: flexes forearm
brachialis
origin: lateral supracondylar ridge of humerus
insertion: styloid process of radius
action: flexes forearm
brachioradialis
origin: anterior ulna
insertion: proximal radius
action: supinates hand
supinator
origin: distal part of anterior ulna
insertion: distal radius
action: pronates hand
pronator quadratus
origin: medial epincondyle of humerus
insertion: palmar aponeurosis
action: flexes hand
palmaris longus
origin: coronoid process of ulna
insertion: lateral, middle shaft of radius
action: pronates hand
pronator teres
origin: medial epicondyle of humerus
insertion: 2nd metacarpal
action: flexes hand
flexor carpi radialis
origin: medial epicondyle of humerus
insertion: fifth metacarpal
action: flexes hand
flexor carpi ulnaris
origin: interosseous membrane
insertion: distal phalanges of digits 2-5
action: flexes hand
flexor digitorum profundus
origin: proximal ulna
insertion: middle phalanges of digits 2-5
action: flexes hand
flexor digitorum superficialis
origin: interosseous membrane
insertion: distal phalanx of pollex (thumb)
action: flexes thumb
flexor pollicis longus
origin: trapezium
insertion: proximal phalanx of first digit
action: flexes thumb
flexor pollicis brevis
origin: trapezium
insertion: first metacarpal
action: opposes thumb
opponens pollicis
origin: trapezium
insertion: proximal phalanx of first digit
action: abducts thumb
abductor pollicis brevis
origin: pisiform
insertion: proximal phalanx of fifth digit
action: abducts fifth digit
abductor digiti minimi
origin: hamulus of hamate
insertion: proximal phalanx of fifth digit
action: flexes fifth digit
flexor digiti minimi brevis
origin: hamulus of hamate
insertion: fifth metacarpal
action: opposes fifth digit
opponens digiti minimi
origin: lateral supracondylar ridge of humerus
insertion: second metacarpal
action: extends hand
extensor carpi radialis longus
origin: lateral epicondyle of humerus
insertion: third metacarpal
action: extends hand
extensor carpi radialis brevis
origin: proximal ulna
insertion: fifth metacarpal
action: extends hand
extensor carpi ulnaris
origin: lateral epicondyle of humerus
insertion: middle and distal phalanges of digits 2-5
action: extends phalanges
extensor digitorum
origin: interosseous membrane
insertion: first metacarpal
action: abducts thumb
abductor pollicis longus
origin: interosseous membrane
insertion: proximal and distal phalanges of pollex (thumb)
action: extends thumb
extensor pollicis longus and brevis
