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31 Cards in this Set
- Front
- Back
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Levator Scapulae
(posterior) |
O- Transverse processes of C1 - C4
I - superior part of medial scapula A - elevates scapula and tilts glenoid fossa inf inn - dorsal scapular and cervical nerves |
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Trapezius
(posterior) |
O - Med 1/3 of nuchal line
I - lateral 1/3 of clavicle, acromion, spine of scapula A - elevates and retracts rotates scapula Inn - accessory nerve |
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Rhombdoids
Posterior |
O - Major - Nuchal ligaments and spinous processes
Insertion - medial border of scapula A - retracts scapula and rotates it to depress glenoid cavity Inn - dorsal scapular nerve |
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Pectroalis Minor
(Anterior) |
O - 3rd to 5th ribs near their costal cartilages
Insertion - coracoid process of the scapula A - stablizes scapula by drawing it inferiorly and anteriorly against the thoracic wall Innervaiton - medial pectoral nerve |
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Serratus Anterior
(Anterior) |
O - fleshy slips from upper 8 -9 ribs
I - costal aspect of medial margin of scapula A - protracts and stablizes scapula assist with upward rotation Innervation - long thoracic nerve |
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Pectoralis Major
(Anterior) |
O - Ant surface of medial clavicle + sternum
Insertion - lat intertubercular groove of humerus A - flexion, adduction rotation of shoulder Inn - lat and med pectoral nerves |
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Coracobrachialis
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O - tip of coracoid process of scapula
I- medial humerus A - flexes and adducts arm Inn - musculocutaneous |
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Teres Major
(Posterior) |
O - dorsal surface of inferior angle of scapula
I - intertubercular groove of humerus A - extends, adducts, and medially rotates arm Innervation - subscapular nerve |
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Latissimus Dorsi
(Posterior) |
O - spinous processes of inf 6 thoracic vertebrae
I - intertubercular groove of humerus A - extends adducts and medially rotates shoulder Innervation - thoracordorsal nerve |
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Deltoid Muscle
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O - lateral 1/3 of clavicle, acromium, spine of scpaula
Insertion - deltoid tuberosity of humerus Action - ant fibers - flexes and medially rotates arm mid fibers -abducts arm Post fibers - extend and laterally rotate arm Inn- axillary nerve |
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Biceps Brachii
(Anterior) |
O - short head - coracoid process of scapula
Long head - supraglenoid tubercle of scapula I - radius and bicipital aponeurosis of fore arm A - supinates forearm and flexes elbow jint Innervation - musculocutaneous |
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Brachialis
(anterior) |
Origin - 1/2 of anterior surface of humerus
Insertion - coronoid process and tuberosity of ulna Action - major flexor of forearm; flexes forearm in all positions Innervation - musculocutaneous nerve |
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Triceps Brachii
(posterior) |
O - long head - tubercle of scapula
Medial head - posterior surface of humerus Lateral head - posterior surface of humerus above radial groove Insertion - proximal end of olecranon process and forearm fascia Action - major extensor of frearm Innervation - radial nerve |
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Pronator Teres
(superficial) |
Origin- Medial epicondyle of humerus, Coronoid process of ulna
Insertion - middle of lateral surface of radius Action - pronates and flexes forearm Innervation - median nerve |
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Flexor Carpi Radialis
(superficial) |
Origin- medial epicondyle of humerus
Insertion - base of 2nd metacarpal Action - flexes and abducts the hand at the wrist Innervation - median nerve |
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Flexor carpi Ulnaris
(superificial) |
Origin - Humerus head, medial epicondyle of humerus; ulnar head: olecarnon and post border of ulna
Insertion - pisiform, hamate 5th metacarpal Action - flexes and adducts hand at wrist Innervation - Ulnar |
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Palmaris Longus
(Superficial) |
Origin - medial epicondyle of humerus
Innsertion - distal 1/2 of flexor retinaculum and palmar aponeurosis Action - weak flexor of hand and tightens palmar aponeurosis Innervation - median nerve |
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Flexor Digitorum Superficialis
(middle layer) |
Origin - humeroulnar head : medial epicondyle o fhumerus, coronoid proess of ulna
Radial head - sup border of radius Insertion - bodies of middle phlangies Action - flexes middle phlanges at proximal joints of the 4 digits Innervation - median nerve |
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Flexor Digitorum profundus
(Deep) |
Origin - Proimal 3/4 of medial and anterior surface of ulna and the interosseus membrane
Inseriton - base of distal phlanges of digits 2-5 Action - flexes distal phlanges at distal interphlangeal joints Innervation - medial part: ulnar nerve lateral part - median nerve |
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Flexor Pollicis Longus
(Deep) |
Origin - Anterior surface of radius and adjacent interosseus membrane
I - base of distal phlanx of thumb Action - flexes the thumb's phalanges Inn - anterior interossesus nerve from median nerve |
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Pronator Quadratus
(deep) |
O - distal 1/2 of ant surface of ulna
I - distal 1/4 of anterior surface of radius A - pronates forearm, deep fibers bidn radius and ulna together Innervation - ant interosseous nerve from median nerve |
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Brachioradialis
(Deep) |
O - proximal 2.3 of supracodylar ridge of humerus
Insertion - lateral surface of distal end of radius Action - flexes the forearm Innervation - Radial nerve |
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Extensor Carpi Radialis Longus
(posterior superficial) |
O - lateral supracondyle ridge of humerus
I - base of 2nd metacarpal A - extends and abducts hand at wrist joint Inn - radial nerve |
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Extensor Carpi Radialis Brevis
(Posterior superficial) |
O - lateral epicondyle of humerus
I - base of 3rd metacarpal A - extends and abducts hand at the wrist joint Inn - deep branch of radial nerve |
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Extensor Digitorum
(posterior superficial) |
O 0 ateral epicondyle of humerus
I - extensor expansions of medial 4 digits A - extends the medial 4 fingers at the metacarpophlangeal joints and extens hand at wrist Inn - posterior interosseous nerve - radial nerve |
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Extensor Carpi Ulnaris
(posterior Superficial) |
O - lateral epicondyle of humerus and posterior border of ulna
I - base of 5th metacarpal A extends and adducts hand at the wrist joint Inn - posterior interossus nerve of radial nerve |
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Supinator
(Deep posterior) |
O - lateral epicondyle of humerus
Insertion - lateral, posterior, ant surfaces of radius A - supinates the forearm inn - radial nerve |
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Abductor Pollicis Longus
(deep posterior) |
O - posterior surface of ulna, radius, intersseous membrane
I - base of 1st metacarpal A - abducts the thumb and extends it at carpo metacarpal joint I - Posterior Intersseous nerve - continuation of radial |
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Extensor Pollicis Longus
(Deep Posterior) |
O - posterior surface of ulna
I - extensor exp of 2nd digit A - extends the index finger and helps to extend the hand Inn - posterior interosseous nerve, a continuation of the deep branch of radial nerve |
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extensor Indicis
(Posterior Deep) |
O posterior surface of ulna and intersseous membrane
I - base of distal phlanx of thumb A - extends distal phalanx of thumb at carpometacarpal and interphlangeal joints Inn - posterior interosseous nerve, a continuation of deep branch of radial nerve |
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Extensor Pollicis Brevis
(Posteriro deep) |
O - posterior surface of radius and interosseus membrane
I - base of proximal palanx of the thub A - extends proximal phalanx of thumb at carpometacarpal joint Innervation - posterior interosseous nerve, deep branch of radial |
