Upper Extremity Muscles w/ Aclands Flashcards
<p>Sternocleidomastoid</p>
<p>O: Tendinous Head-sternum<br></br>
Muscular Head- medial 1/3 of clavicle</p>
<p>I: Mastoid process of skull</p>
<p>A: One sided lateral flexion of neck ipsilaterally; Contralateral rotation of head</p>
<p>I: Accessory Nerve (CN XI) C2-3 pain and proprioception</p>
<p>Subclavius</p>
<p>O: 1st Rib</p>
<p>I: Undersurface of clavicle</p>
<p>A: Depresses clavicle; Maintain SC joint</p>
<p>INN:Nerve to subclavian C5-6</p>
<p>ART: Clavicular branch of thoracoacromial artery</p>
<p>Upper Trapezius</p>
<p>O: External occipital protuberance, Ligamentum nuche, spinous process of C7</p>
<p>I: Acromion, lateral 1/3 of clavicle</p>
<p>A: Elevation of scapula; Rotation of glenoid cavity upward</p>
<p>INN: Accessory Nerve (CN XI) C3-4 pain and proprioception</p>
<p>ART: Transverse cervical artery</p>
<p>Middle Trapezius</p>
<p>O: Spinous process ofT1-5</p>
<p>I:Spine of scapula</p>
<p>A: Retraction of scapula; rotation of glenoid cavity upward</p>
<p>INN:Accessory Nerve (CN XI) C3-4 pain and proprioception</p>
<p>ART: Transverse cervical artery</p>
<p>Lower Trapezius</p>
<p>O:Spinous process ofT6-12</p>
<p>I: Spine of scapula</p>
<p>A: Depression of scapula; rotation of glenoid cavity upward</p>
<p>INN: Accessory Nerve (CN XI) C3-4 pain and proprioception</p>
<p>ART: Transverse cervical artery</p>
<p>Latissimus Dorsi</p>
<p>O: Spinous processes of T7-S5, posterior iliac crest</p>
<p>I: Medial lip (crest of lessor tubercle) and floor of intertubercular groove of humerus</p>
<p>A: Extension, adduction, and medial rotation (IR) of arm</p>
<p>INN: Thoracodorsal nerve C6-8</p>
<p>ART:Thoracodorsal artery</p>
<p>Levator scapulae</p>
<p>O: Transverse process of C1-4</p>
<p>I: Superior angle and upper part of medial boarder</p>
<p>A: Elevation of scapula</p>
<p>INN: Dorsal scapular nerve C3-5</p>
<p>ART: Dorsal scapular artery</p>
<p>Rhomboid Minor</p>
<p>O: Lower part of ligamentum nuchae, spinous process of C7-T1</p>
<p>I: Medial boarder of scapula at base of spine</p>
<p>A:Elevation and retraction of scapula; downward rotation of glenoid cavity</p>
<p>INN: Dorsal scapular nerve C5</p>
<p>ART: Dorsal scapular artery</p>
<p>Rhomboid Major</p>
<p>O: Spinous process of T2-5</p>
<p>I:Medial boarder of scapula below rhomboid minor</p>
<p>A: Elevation and retraction of scapula; downward rotation of glenoid cavity</p>
<p>INN: Dorsal scapula nerve C5</p>
<p>ART: Dorsal scapular artery</p>
<p>Serratus Anterior</p>
<p>O: Ribs 1-8 on anterolateral thoracic wall</p>
<p>I: Medial boarder of scapula, inferior angle</p>
<p>A: Protraction of scapula, upward rotation of glenoid cavity; holds medial boarder against thoracic wall</p>
<p>INN: Long thoracic nerve C5-7</p>
<p>ART: Long thoracic artery</p>
<p>Posterior Deltoid</p>
<p>O: Spine of scapula</p>
<p>I: Deltoid tuberosity of humerus</p>
<p>A: Extension and Lateral rotation (ER) of arm</p>
<p>INN: Axillary nerve C5-6</p>
<p>ART: Posterior circumflex humeral artery</p>
<p>Medial Deltoid</p>
<p>O: Acromion</p>
<p>I: Deltoid tuberosity of humerus</p>
<p>A: Abduction of arm</p>
<p>INN: Axillary nerve C5-6</p>
<p>ART: Posterior circumflex humeral artery</p>
<p>Anterior Deltoid</p>
<p>O: Lateral 1/3 of clavicle</p>
<p>I: Deltoid tuberosity of humerus</p>
<p>A: Flexion and medial rotation (IR) of arm</p>
<p>INN: Axillary nerve C5-6</p>
<p>ART: Posterior circumflex humeral artery</p>
<p></p>
<p>Supraspinatus</p>
<p>O: Supraspinatus fossa of scapula</p>
<p>I: Greater tubercle of humerus</p>
<p>A: Abduction of arm</p>
<p>INN: Suprascapular nerve C5-6</p>
<p>ART: Suprascapular artery</p>
<p>Infraspinatus</p>
<p>O: Infraspinatus fossa of scapula</p>
<p>I: Greater tubercle of humerus below supraspinatus</p>
<p>A: Lateral rotation of arm (ER)</p>
<p>INN: Suprascapular nerve C5-6</p>
<p>ART: Suprascapular artery</p>
<p>Teres minor</p>
<p>O: Upper 2/3 lateral boarder of scapula</p>
<p>I: Greater tubercle of humerus below infraspinatus</p>
<p>A: Lateral rotation of arm (ER)</p>
<p>INN: Axillary nerveC5-6</p>
<p>ART: Circumflex scapular and posterior circumflex humeral artery</p>
<p>Teres major</p>
<p>O: Inferior angle of scapula</p>
<p>I: Medial lip of intertubercular groove</p>
<p>A: Adduction, medial rotation (IR) and extension of arm</p>
<p>INN: Lower subscapular nerve C6</p>
<p>ART: Subscapular artery and posterior circumflex humeral artery</p>
<p>Subscapularis</p>
<p>O: Subscapular fossa</p>
<p>I: Lessor tubercle and crest of humerus</p>
<p>A: Medial rotation of arm (IR)</p>
<p>INN: Upper and lower subscapular nerve C5-6</p>
<p>ART: Subscapular artery</p>
<p>Pectoralis Minor</p>
<p>O: Ribs 3-5</p>
<p>I: Medial portion of coracoid process</p>
<p>A: Scapular protraction</p>
<p>INN: Medial pectoral nerve C8</p>
<p>ART: Pectoral branch of thoracoacromial trunk</p>
<p>Pectoralis Major-Clavicular Head</p>
<p>O: Medial ½ of clavicle</p>
<p>I: Crest of greater tubercle</p>
<p>A: Humerus adduction and medial rotation (IR)</p>
<p>INN: Lateral pectoral nerve C5-6</p>
<p>ART: Pectoral branch of thoracoacromial trunk</p>
<p>Pectoralis Major-Sternal Head</p>
<p>O: Sternum, costa cartilage of ribs 2-6</p>
<p>I: Crest of greater tubercle</p>
<p>A: Humerus adduction and medial rotation (IR)</p>
<p>INN: Lateral and medial pectoral nerve C8-T1</p>
<p>ART: Pectoral branch of thoracoacromial trunk</p>
<p>Coracobrachialis</p>
<p>O: Coracoid process of scapula</p>
<p>I: Upper 1/3 of humerus</p>
<p>A: Flexion, adduction, and medial rotation (IR) of humerus</p>
<p>INN: Musculocutatneous nerve C6-7</p>
<p>ART: Brachial artery</p>
<p>Biceps Brachii Short Head</p>
<p>O: Coracoid process of scapula</p>
<p>I: Radial tuberosity; aponeurosis of biceps brachii</p>
<p>A: Elbow flexion; Forearm supination</p>
<p>INN: Musculocutaneous Nerve C5-6</p>
<p>ART: Brachial Artery</p>
<p>Biceps Brachii Long Head</p>
<p>O: Supraglenoid tubercle of scapula</p>
<p>I: Radial tuberosity; aponeurosis of biceps brachii</p>
<p>A: Elbow flexion; Forearm supination</p>
<p>INN: Musculocutaneous Nerve C5-6</p>
<p>ART: Brachial Artery</p>
<p>Brachialis</p>
<p>O: Anterior surface of lower humerus</p>
<p>I: Coranoid process of ulna</p>
<p>A: Elbow flexion</p>
<p>INN: Musculocutaneous Nerve C5-6</p>
<p>ART: Brachial Artery; Radial recurrent artery</p>
<p>Brachioradialis</p>
<p>O: Lateral supracondylar ridge of humerus</p>
<p>I: Styloid process of radius</p>
<p>A: Elbow flexion</p>
<p>INN: Radial Nerve C5-6</p>
<p>ART: Radial recurrent artery</p>
<p>Extensor Carpi Radialis Longus</p>
<p>O: Lateral epicondyle; Lateral supracondylar ridge</p>
<p>I: Base of 2nd metacarpal</p>
<p>A: Wrist extension; Radial deviation</p>
<p>INN: Radial Nerve C6-7</p>
<p>ART: Radial recurrent artery</p>
<p>Extensor Carpi Radialis Brevis</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of 3rd metacarpal</p>
<p>A: Wrist extension; Radial deviation</p>
<p>INN: Deep branch of Radial Nerve C7-8</p>
<p>ART: Radial recurrent artery</p>
<p>Extensor Carpi Ulnaris</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of 5th metacarpal</p>
<p>A: Wrist extension; Ulnar deviation</p>
<p>INN: Radial Nerve C7-8</p>
<p>ART: Posterior interosseus artery</p>
<p>Flexor Carpi Ulnaris</p>
<p>O: Medial epicondyle</p>
<p>I: Pisiform, Hamate, base of 5th metacarpal</p>
<p>A: Wrist flexion; Ulnar deviation</p>
<p>INN: Ulnar Nerve C7-8</p>
<p>ART: Muscular branches of Ulnar artery</p>
<p>Flexor Carpi Radialis</p>
<p>O: Medial epicondyle</p>
<p>I: Base of 2nd and 3rd metacarpal</p>
<p>A: Wrist flexion; Radial deviation</p>
<p>INN:Median Nerve C6-7</p>
<p>ART: Muscular branches of Radial artery</p>
<p>Pronator Quadratus</p>
<p>O: Distal anterior ulna</p>
<p>I: Distal anterior radius</p>
<p>A: Forearm pronation</p>
<p>INN: Anterior interosseous nerve C8-T1</p>
<p>ART: Anterior interosseous artery; Radial artery</p>
<p>Pronator Teres</p>
<p>O: Medial epicondyle; Coranoid process of ulna</p>
<p>I: Distal lateral radius</p>
<p>A: Forearm pronation; Elbow flexion</p>
<p>INN: Median Nerve C6-7</p>
<p>ART: Ulnar artery; Radial artery</p>
<p>Supinatior</p>
<p>O: Lateral epicondyle</p>
<p>I: Upper lateral radius</p>
<p>A: Forearm supination</p>
<p>INN: Deep branch of Radial Nerve C5-6</p>
<p>ART: Radial recurrent artery</p>
<p>Triceps Brachii Long Head</p>
<p>O: Infraglenoid tubercle of scapula</p>
<p>I: Olecranon process; antebrachial fascia</p>
<p>A: Elbow extension</p>
<p>INN: Radial Nerve C6-8</p>
<p>ART:Superior ulnar collateral; profunda brachii</p>
<p>Triceps Brachii Medial Head</p>
<p>O: Distal 2/3 medial posterior humerus</p>
<p>I: Olecranon process; antebrachial fascia</p>
<p>A: Elbow extension</p>
<p>INN: Radial Nerve C6-8</p>
<p>ART: Superior ulnar collateral; profunda brachii</p>
<p>Triceps Brachii Lateral Head</p>
<p>O: Proximal ½ lateral posterior humerus</p>
<p>I: Olecranon process; antebrachial fascia</p>
<p>A: Elbow extension</p>
<p>INN: Radial Nerve C6-8</p>
<p>ART: Superior ulnar collateral; profunda brachii</p>
<p>Anconeus</p>
<p>O: Lateral epicondyle</p>
<p>I: Olecranon process</p>
<p>A: Elbow extension</p>
<p>INN: Radial Nerve C7-8</p>
<p>ART: Profunda brachii</p>
<p>Extensor Digitorum Communis</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of middle and distal phalanges of digits 2-5 via extensor aponeurosis</p>
<p>A: Wrist extension; Extension of MP joints of digits 2-5</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Indicis</p>
<p>O: Lower posterior ulna and intersosseous membrane</p>
<p>I: Extensor expansion of index finger</p>
<p>A: Extension of index finger</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Digit Minimi</p>
<p>O: Lateral epicondyle</p>
<p>I: Extensor aponeurosis of 5th digit</p>
<p>A: Extension of 5th digit</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Pollicis Longus</p>
<p>O: Middle posterior ulna and interosseous membrane</p>
<p>I: Base of distal phalanx of thumb</p>
<p>A: Extension of IP joint, radial deviation</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Pollicis Brevis</p>
<p>O: Distal posterior radius and interosseous membrane</p>
<p>I: Base of the proximal phalanx of thumb</p>
<p>A: Extension of MP joint of thumb; Radial deviation</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Palmaris Longus</p>
<p>O: Medial epicondyle</p>
<p>I: Apex of palmer aponeurosis</p>
<p>A: Wrist flexion</p>
<p>INN: Median Nerve C8-T1</p>
<p>ART: Muscular branches from Ulnar artery</p>
<p>Flexor Digitorum Superficialis</p>
<p>O: Humeroulnar head-Medial epicondyle, ulnar collateral ligament and ulnar coronoid process<br></br>
Radial head- Upper ½ anterior boarder of radius</p>
<p>I: Tendons split and insert on sides of middle phalanx of each digit</p>
<p>A: Flexion of PIP joints of digits 2-5; Wrist flexion</p>
<p>INN: Median Nerve C8-T1</p>
<p>ART: Muscular branches from ulnar and radial arteries</p>
<p>Flexor Digitorum Profundus</p>
<p>O: Upper ¾ anterior ulnar & interosseous membrane</p>
<p>I: Base of distal phalanges of digits 2-5</p>
<p>A: Flexion of DIP joints; wrist flexion</p>
<p>INN: Median Nerve digits 2-3, C8-T1<br></br>
Ulnar Nerve digits 4-5, C8-T1</p>
<p>ART: Muscular branches from radial & ulnar, anterior interosseous artery from ulnar artery</p>
<p>Flexor Policis Longus</p>
<p>O: Anterior radius and interosseous membrane</p>
<p>I:Base of distal phalanx of thumb</p>
<p>A: Flexion of thumb (IP flexion)</p>
<p>INN: Anterior interosseous brach of Median Nerve C8-T1</p>
<p>ART: Muscular branches from radial artery and anterior interosseous artery from ulnar artery</p>
<p>Abductor Pollicis Longus</p>
<p>O: Upper posterior radius and ulna, interosseous membrane</p>
<p>I: Base of 1st metacarpal and trapezium</p>
<p>A: Extension of thumb, abduction of CMC joint of thumb, radial deviation</p>
<p>INN: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>ART: Posterior interosseous artery from ulnar artery</p>
<p>Lumbricals</p>
<p>O: Tendons of flexor digitorum profundus</p>
<p>I: Extensor digitorum expansion; each muscle attaches distally to radial side of extensor digitorum</p>
<p>A: MCP flexion of digits 2-5; Extension of IP joints with MCP joints held in extension</p>
<p>INN:Median C8-T1 2nd & 3rd digits<br></br>
Ulnar C8-T1 4th & 5th</p>
<p>ART: Deep palmar arch of radial artery</p>
<p>Dorsal Interossei</p>
<p>O:Base of metacarpals; each muscle has 2 heads from adjacent sides of metacarpals</p>
<p>I: Dorsal extensor expansion at base of proximal phalanges; 1st & 2nd on radial side, 3rd&4th on ulnar</p>
<p>A: Finger abduction</p>
<p>INN: Ulnar Nerve C8-T1</p>
<p>ART: Deep palmar arch of radial artery</p>
<p>Abductor Digiti Minimi</p>
<p>O: Pisiform, tendons of flexor carpi ulnaris & pisohamate ligaments</p>
<p>I: Ulnar side of base of 5th proximal phalanx & its dorsal expansion of extensor digiti minimi</p>
<p>A: Abduction of 5th digit</p>
<p>INN: Ulnar nerve C8-T1</p>
<p>ART: Deep palmar branches of radial artery</p>
<p>Palmar Interossei</p>
<p>O: Base of 2nd, 4th, 5th metacarpals</p>
<p>I: Dorsal extensor expansion of corresponding proximal phalanx</p>
<p>A: Finger adduction</p>
<p>INN: Ulnar Nerve C8-T1</p>
<p>ART: Deep palmar arch of radial artery</p>
<p>Flexor Pollicis Brevis</p>
<p>O: Across 3 distal carpals (capitate, trapezoid & trapezium), their palmar ligaments & flexor retinaculum</p>
<p>I: Thumb, base of 1st proximal phalanx</p>
<p>A: Flexion of thumb (MSP); opposition</p>
<p>INN: Median C8-T1<br></br>
Ulnar C8-T1</p>
<p>ART: Superficial palmar braches of radial artery</p>
<p>Abductor Pollicis Brevis</p>
<p>O: Tubercle of scaphoid & trapezium, flexor retinaculum & tendons of abductor pollicis longus</p>
<p>I: Base of 1st proximal phalanx, extensor mechanism of thumb</p>
<p>A: Thumb abduction & opposition</p>
<p>INN: Median Nerve C8-T1</p>
<p>ART: Superficial palmar branches of radial artery</p>
<p>Adductor Pollicis</p>
<p>O: Oblique Head-base of 2nd & 3rd metacarpals, capitate & palmar ligaments of carpals<br></br>
Transverse Head-shaft of 3rd metacarpal on palmer aspect</p>
<p>I: 1st proximal phalanx on ulnar side</p>
<p>A: Thumb adduction</p>
<p>INN: Ulnar Nerve C8-T1</p>
<p>ART: Superficial palmar branches of radial artery</p>
<p>Opponens Pollicis</p>
<p>O: Tubercle of trapezium & flexor retinaculum</p>
<p>I: Length of 1st metacarpal; lateral aspect and palmer surface</p>
<p>A: Thumb opposition</p>
<p>INN: Median Nerve C8-T1</p>
<p>ART: Superficial palmar branches of radial artery</p>
<p>Oppenens Digiti Minimi</p>
<p>O: Hook of hamate & flexor retinaculum</p>
<p>I: Length of 5th metacarpal; ulnar aspect & palmar surface</p>
<p>A: Opposition of 5th digit</p>
<p>INN: Ulnar nerve C8-T1</p>
<p>ART: Deep palmar branches of radial artery</p>
<p>Flexor Digiti Minimi</p>
<p>O: Transverse carpal ligament, hook of hamate</p>
<p>I: Ulnar side of base of proximal phalanx of 5th digit</p>
<p>A: Flexion of 5th digit</p>
<p>INN: Ulnar Nerve C8-T1</p>
<p>ART: Deep palmar branches of radial artery</p>
