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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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