Upper Extremity Muscles w/ Aclands Flashcards
(58 cards)
<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>
Brachialis
O: Anterior surface of lower humerus
I: Coranoid process of ulna
A: Elbow flexion
INN: Musculocutaneous Nerve C5-6
ART: Brachial Artery; Radial recurrent artery
Brachioradialis
O: Lateral supracondylar ridge of humerus
I: Styloid process of radius
A: Elbow flexion
INN: Radial Nerve C5-6
ART: Radial recurrent artery
Extensor Carpi Radialis Longus
O: Lateral epicondyle; Lateral supracondylar ridge
I: Base of 2nd metacarpal
A: Wrist extension; Radial deviation
INN: Radial Nerve C6-7
ART: Radial recurrent artery
Extensor Carpi Radialis Brevis
O: Lateral epicondyle
I: Base of 3rd metacarpal
A: Wrist extension; Radial deviation
INN: Deep branch of Radial Nerve C7-8
ART: Radial recurrent artery
Extensor Carpi Ulnaris
O: Lateral epicondyle
I: Base of 5th metacarpal
A: Wrist extension; Ulnar deviation
INN: Radial Nerve C7-8
ART: Posterior interosseus artery
Flexor Carpi Ulnaris
O: Medial epicondyle
I: Pisiform, Hamate, base of 5th metacarpal
A: Wrist flexion; Ulnar deviation
INN: Ulnar Nerve C7-8
ART: Muscular branches of Ulnar artery
Flexor Carpi Radialis
O: Medial epicondyle
I: Base of 2nd and 3rd metacarpal
A: Wrist flexion; Radial deviation
INN: Median Nerve C6-7
ART: Muscular branches of Radial artery
Pronator Quadratus
O: Distal anterior ulna
I: Distal anterior radius
A: Forearm pronation
INN: Anterior interosseous nerve C8-T1
ART: Anterior interosseous artery; Radial artery
Pronator Teres
O: Medial epicondyle; Coranoid process of ulna
I: Distal lateral radius
A: Forearm pronation; Elbow flexion
INN: Median Nerve C6-7
ART: Ulnar artery; Radial artery
Supinatior
O: Lateral epicondyle
I: Upper lateral radius
A: Forearm supination
INN: Deep branch of Radial Nerve C5-6
ART: Radial recurrent artery
Triceps Brachii Long Head
O: Infraglenoid tubercle of scapula
I: Olecranon process; antebrachial fascia
A: Elbow extension
INN: Radial Nerve C6-8
ART: Superior ulnar collateral; profunda brachii
Triceps Brachii Medial Head
O: Distal 2/3 medial posterior humerus
I: Olecranon process; antebrachial fascia
A: Elbow extension
INN: Radial Nerve C6-8
ART: Superior ulnar collateral; profunda brachii
Triceps Brachii Lateral Head
O: Proximal ½ lateral posterior humerus
I: Olecranon process; antebrachial fascia
A: Elbow extension
INN: Radial Nerve C6-8
ART: Superior ulnar collateral; profunda brachii
Anconeus
O: Lateral epicondyle
I: Olecranon process
A: Elbow extension
INN: Radial Nerve C7-8
ART: Profunda brachii
Extensor Digitorum Communis
O: Lateral epicondyle
I: Base of middle and distal phalanges of digits 2-5 via extensor aponeurosis
A: Wrist extension; Extension of MP joints of digits 2-5
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Extensor Indicis
O: Lower posterior ulna and intersosseous membrane
I: Extensor expansion of index finger
A: Extension of index finger
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Extensor Digit Minimi
O: Lateral epicondyle
I: Extensor aponeurosis of 5th digit
A: Extension of 5th digit
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Extensor Pollicis Longus
O: Middle posterior ulna and interosseous membrane
I: Base of distal phalanx of thumb
A: Extension of IP joint, radial deviation
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Extensor Pollicis Brevis
O: Distal posterior radius and interosseous membrane
I: Base of the proximal phalanx of thumb
A: Extension of MP joint of thumb; Radial deviation
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Palmaris Longus
O: Medial epicondyle
I: Apex of palmer aponeurosis
A: Wrist flexion
INN: Median Nerve C8-T1
ART: Muscular branches from Ulnar artery
Flexor Digitorum Superficialis
O: Humeroulnar head-Medial epicondyle, ulnar collateral ligament and ulnar coronoid process
Radial head- Upper ½ anterior boarder of radius
I: Tendons split and insert on sides of middle phalanx of each digit
A: Flexion of PIP joints of digits 2-5; Wrist flexion
INN: Median Nerve C8-T1
ART: Muscular branches from ulnar and radial arteries
Flexor Digitorum Profundus
O: Upper ¾ anterior ulnar & interosseous membrane
I: Base of distal phalanges of digits 2-5
A: Flexion of DIP joints; wrist flexion
INN: Median Nerve digits 2-3, C8-T1
Ulnar Nerve digits 4-5, C8-T1
ART: Muscular branches from radial & ulnar, anterior interosseous artery from ulnar artery
Flexor Policis Longus
O: Anterior radius and interosseous membrane
I: Base of distal phalanx of thumb
A: Flexion of thumb (IP flexion)
INN: Anterior interosseous brach of Median Nerve C8-T1
ART: Muscular branches from radial artery and anterior interosseous artery from ulnar artery
Abductor Pollicis Longus
O: Upper posterior radius and ulna, interosseous membrane
I: Base of 1st metacarpal and trapezium
A: Extension of thumb, abduction of CMC joint of thumb, radial deviation
INN: Posterior interosseous branch of Radial Nerve C7-8
ART: Posterior interosseous artery from ulnar artery
Lumbricals
O: Tendons of flexor digitorum profundus
I: Extensor digitorum expansion; each muscle attaches distally to radial side of extensor digitorum
A: MCP flexion of digits 2-5; Extension of IP joints with MCP joints held in extension
INN: Median C8-T1 2nd & 3rd digits
Ulnar C8-T1 4th & 5th
ART: Deep palmar arch of radial artery
Dorsal Interossei
O: Base of metacarpals; each muscle has 2 heads from adjacent sides of metacarpals
I: Dorsal extensor expansion at base of proximal phalanges; 1st & 2nd on radial side, 3rd&4th on ulnar
A: Finger abduction
INN: Ulnar Nerve C8-T1
ART: Deep palmar arch of radial artery
Abductor Digiti Minimi
O: Pisiform, tendons of flexor carpi ulnaris & pisohamate ligaments
I: Ulnar side of base of 5th proximal phalanx & its dorsal expansion of extensor digiti minimi
A: Abduction of 5th digit
INN: Ulnar nerve C8-T1
ART: Deep palmar branches of radial artery
Palmar Interossei
O: Base of 2nd, 4th, 5th metacarpals
I: Dorsal extensor expansion of corresponding proximal phalanx
A: Finger adduction
INN: Ulnar Nerve C8-T1
ART: Deep palmar arch of radial artery
Flexor Pollicis Brevis
O: Across 3 distal carpals (capitate, trapezoid & trapezium), their palmar ligaments & flexor retinaculum
I: Thumb, base of 1st proximal phalanx
A: Flexion of thumb (MSP); opposition
INN: Median C8-T1
Ulnar C8-T1
ART: Superficial palmar braches of radial artery
Abductor Pollicis Brevis
O: Tubercle of scaphoid & trapezium, flexor retinaculum & tendons of abductor pollicis longus
I: Base of 1st proximal phalanx, extensor mechanism of thumb
A: Thumb abduction & opposition
INN: Median Nerve C8-T1
ART: Superficial palmar branches of radial artery
Adductor Pollicis
O: Oblique Head-base of 2nd & 3rd metacarpals, capitate & palmar ligaments of carpals
Transverse Head-shaft of 3rd metacarpal on palmer aspect
I: 1st proximal phalanx on ulnar side
A: Thumb adduction
INN: Ulnar Nerve C8-T1
ART: Superficial palmar branches of radial artery
Opponens Pollicis
O: Tubercle of trapezium & flexor retinaculum
I: Length of 1st metacarpal; lateral aspect and palmer surface
A: Thumb opposition
INN: Median Nerve C8-T1
ART: Superficial palmar branches of radial artery
Oppenens Digiti Minimi
O: Hook of hamate & flexor retinaculum
I: Length of 5th metacarpal; ulnar aspect & palmar surface
A: Opposition of 5th digit
INN: Ulnar nerve C8-T1
ART: Deep palmar branches of radial artery
Flexor Digiti Minimi
O: Transverse carpal ligament, hook of hamate
I: Ulnar side of base of proximal phalanx of 5th digit
A: Flexion of 5th digit
INN: Ulnar Nerve C8-T1
ART: Deep palmar branches of radial artery
