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Apendicular Muscles
Forelimb and arm muscles
58
Anatomy
Undergraduate 4
04/14/2013
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Term
Teres major O
 Definition
inferior lateral border and inferior angle of scapula
Term
Teres major I
 Definition
Lesser tubercle and intertubercular groove of humerus
Term
Teres major A
 Definition
Extends, adducts, and medially rotates the arm.
Term
Deltoideus O
 Definition
Acromial end of clavicle; acromion and spine of scapula
Term
Deltoideus I
 Definition
Deltoid tuberosity of humerus
Term
Deltoideus A
 Definition
Anterior Fibers: flex and medially rotate arm
Middle Fibers: Prime mover of arm abduction
Posterior Fibers: Extend and laterally rotate arm
Term
Biceps Brachii O
 Definition
Short head: coraocid
Long head: supraglenoid tubercle of scapual
Term
Biceps Brachii I
 Definition
Radial tuberosity
Term
Biceps brachii A
 Definition
Flexes antebrachium
Term
Brachialis O
 Definition
Lateral supercondylar ridge of humerus
Term
Brachialis I
 Definition
Coronoid process of ulna
Term
Brachialis A
 Definition
Primary flexor of antebrachium
Term
Coracobrachialis O
 Definition
Coracoid process of scapula
Term
Coracobrachialis I
 Definition
Middle medial shaft of humerus
Term
Coracobrachialis A
 Definition
Adducts and flexes humerus/brachium
Term
Triceps brachii long O
 Definition
infraglenoid tubecle of scapula
Term
Triceps brachii long I
 Definition
Olecranon process of ulna
Term
Triceps Brachii long A
 Definition
Primary extensor of forearm, also extends and adducts arm
Term
Triceps brachii medial O
 Definition
Posterior humerus below radial groov
Term
Triceps brachii medial I
 Definition
Olecranon process of ulna
Term
Triceps brachii medial A
 Definition
Primary extensor of forarm (Antebrachium)
Term
brachioradialis O
 Definition
lateral supercondylar ride of humerus
Term
brachioradialis I
 Definition
Styloid process of radius
Term
brachioradialis A
 Definition
flexes forearm (antebrachium)
Term
Extensor carpi radialis longus/brevis O
 Definition
lateral supracondylar ridge of humerus
Term
Extensor carpi radialis longus/brevis I
 Definition
Base of metacarpal II/III
Term
Extensor carpi radialis longus/brevis A
 Definition
Extends wrist, abducts hand, and extends antebrachium
Term
Pronator teres O
 Definition
Medial epicondyle of humerus and coronoid process of ulna
Term
Pronator teres I
 Definition
Lateral surface of radius
Term
Pronator teres A
 Definition
Pronates forearm
Term
Supinator O
 Definition
Lateral epiocondyle of humerus and ulna distal to radial notch
Term
Supinator I
 Definition
Anterolateral surface of radius distal to radial tuberosity
Term
Supinator A
 Definition
supinates forearm
Term
Flexor carpi radialis O
 Definition
medial epicondyle of humerus
Term
Flexor carpi radialis I
 Definition
base of metacarpals II and III
Term
Flexor carpi radialis A
 Definition
Flexes wrist ad abducts hand
Term
Palmarus longus O
 Definition
Medial epicondyle of humerus
Term
palmarus longus I
 Definition
On top of flexor retinaculum and palmar aponeurosis
Term
Palmarus longus A
 Definition
Weak wrist flexor
Term
Flexor carpi ulnaris O
 Definition
Medial epicondyle ofhumerus; olecranon and posterior surface of ulna
Term
Flexor carpi ulnaris I
 Definition
Pisiform and hamate bones; base of metacarpal V
Term
Flexor carpi ulnaris A
 Definition
Flexes wrist and adducts hand
Term
Flexor digitorum superficialis O
 Definition
Meidial epicondyle ofh umerus, cornoid process of ulna
Term
Flexor digitorum superficialis I
 Definition
Middle phalanges of fingers 2-5
Term
Flexor digitorum superficialis A
 Definition
Flexes wrist, 2-5th MP joints, and PIP joints
Term
Flexor digitorum profundus O
 Definition
Anteromedial surface of ulna; interosseous membrane
Term
Flexor digitorum profundus I
 Definition
Distal phalanges of fingers 2-5
Term
Flexor digitorum profundus A
 Definition
Flexes wrists, 2-5 MP joints, PIP joints, and DIP joints
Term
Extensor digitorum O
 Definition
lateral epicondyle of humerus
Term
Extensor digitorum I
 Definition
Distal and middle phalanges of fingers 2-5
Term
Extensor digitorum A
 Definition
Extends wrist, extends 2-5th MP joins, Pip joints, and dip joints
Term
extensor digiti minimum O
 Definition
Lateral epicondyle of humerus
Term
Extensor digiti minimum I
 Definition
Proximal phalanx of finger 5
Term
Extensor digiti minimum A
 Definition
Extends wrist, MP and PIP joints of finger 5
Term
Extensor carpi ulnaris O
 Definition
Lateral epicondyle of humerus; posterior border of ulna
Term
Extensor carpi ulnaris I
 Definition
Base of metacarpal V
Term
Extensor Carpi ulnaris A
 Definition
Extends wrists, adducts hand
Term
Extensor retinaculum
Flexor retinaculum
 Definition
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