Arm Muscles Word Scramble
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Muscle | Origin | Insertion | Action |
Pectoralis Minor | ~2-5 ribs | coracoid process of scapula | adbucts scapula and rotates it downward |
Serratus anterior | superior 8-9 ribs | vertebral border and angle of scapula | adbucts scapula and rotates it upward |
Trapezius | occipital bone, spine of C7 and T1-T12 | clavicle, acromion, spine of scapula | elevate, adduct, depress scapula, rotates it upward |
Pectoralis Major | clavicle, sternum, ~1-7 ribs | intertubercular sulcus of humerus | adducts and medially rotates arm |
Latissimus Dorsi | spines of T6-T12, L1-L5, crests of sacrum and ilium | intertubersular sulcus of humerus | extends, adducts, and medially rotates arm and shoulder (swimming movement) |
Deltoid | clavicle, acromion, spine of scapula | deltoid tuberosity of humerus | adbuct, flex, extand, medially and lateral rotate arm |
Coracobrachialis | coracoid process of scapula | medial shaft of humerus | flex and adduct arm |
Biceps Brachii | long head: supraglenoid tubercle short head: coracoid process of scapula | radial tuberosity of radius | flex arm and forearm, supinates forearm |
Brachialis | distal anterior shaft of humerus | coronoid process of ulna | flex forearm |
Brachioradialis | distal lateral shaft of humerus | styloid process of raduis | flexes, supinates and pronates forearm |
Triceps Brachii | Humerus and scapula | olecranon of ulna | extends forearm and arm |
Flexor Carpi Radialis | medial epicondyle of humerus | 2nd and 3rd metacarpals | flex, abduct hand at wrist |
Palmaris Longus | medial epicondyle of humerus | flexor retinaculum and palmar aponeurosis | weak wrist flexor |
Flexor Carpi Ulnaris | Medial epicondyle of humerus | pisiform, hamate, and 5th metacarpal | flex, adduct hand at wrist |
Extensor Carpi Radialis | lateral suprecondylar ridge of humerus | 2nd matecarpal | extend, abduct hand at wrist |
Extensor Carpi Radialis | lateral epicondyle of humerus | 3rd metacarpal | extend, abduct hand at wrist |
Extensor Digiti Minimi | lateral epicondyle of humerus | 5th phalanx | extands proximal plalanx of little finger |
Extensor Pollicis Brevis | posterior raduis | proximal phalanx of thumb | extends proximal phalanx of thumb |
Abductor Pollicis Longus | posteros radius and ulna | 1st metacarpal | abducts and extends thumb and abducts wrist |
Extensor Pollicis Longus | posterior shaft of radius | distal phalanx of thumb | extends distal phanlanx of thumb and abducts wrist |
Extensor Indicis | posterior ulna | tendon of extensor digitorum of index | extends phalanges of index and wrist |
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anatomy&physiology
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