upper extremities OIAN Flashcards
Pectoralis Major
O: medial clavicle, sternum, and costal cartilages of ribs 1-6
I: greater tubercle of the humerus
A: All fibers: shoulder adduction, internal rotate shoulder
Up- flex shoulder and horizon ADD
Low- extend shoulder
N: medial and lateral pectoral nerves
Pectoralis Minor
O: ribs 3-5
I: coracoid process of the scapula
A: scapular depression, protraction, & downward rotation
N: medial pectoral nerve
Serratus Anterior
O: external surfaces ribs 1-9
I: anterior surface & medial border of scapula
A: scapular upward rotation protraction
- closed chain: medal border scapula against rib cage
N: long thoracic nerve
Deltoid
O: lateral 1/3 clavicle, acromion process, and spine of the scapula
I: deltoid tuberosity of the humerus
A: ant- shoulder ABD, flexion, IR & horizontal add
mid- shoulder abduction
post- shoulder ABD, extension, ER, & horizontal abduction
N: Axillary nerve
Trapezius
O: external occipital protuberance, medial superior nuchal line, ligamentum nuchae, spinous processes of C7-T12
I: lateral 1/3 clavicle & scapular spine/acromion process
A: up: Bilateral- cervical extension
Unilateral- cervical sidebend to the same side, contralateral cervical rotation, scapular elevation & upward rotation
mid: scapular retraction & stabilization
Low: scapular upward rotation & depression
N: Accessory Nerve
Levator Scapulae
O: tansverse processes of C1-C4
I: medial border of scapula between the superior angle and superior portion of spine of scapula
A: Bilateral- cervical extension
Unilateral- scapular elevation and downward rotation; cervical sidebend & ipsilateral cervical rotation
N: cervical spinal nerve
dorsal scapular nerve
Rhomboid Major & Minor
O: spinous processes C7-T5
I: medial border of the scapula between spine of Scapula & inferior angle
A: retraction, scapular elevation, and downward rotation
N: dorsal scapular nerve
Latissimus Dorsi
O: inferior angle of scapula, spinous processes of T6-T12, ribs 9-12, thoracolumbar fascia, posterior iliac crest
I: bicipital groove of the humerus
A: shoulder extensions, internal rotation, & adduction
N: thoracodorsal nerve
Teres Major
O: lower 1/3 lateral border of the scapula near the inferior angle
I: crest below the lesser tubercle of the humerus
A: shoulder extension, internal rotation, & adduction
N: subscapular
Triceps Brachii
O: Long- infra glenoid tubercle of the scapula
lateral- posterior humerus superior the radial
groove
medial-posterior humerus inferior the radial
groove
I: olecranon process of the ulna
A: Long- shoulder extension
All- elbow extension
N: radial
coracobrachialis
O: coracoid process of the scapula
I: medial mid-humerus
A: shoulder flexion
N: musculocutaneous
Infraspinatus
O: infraspinous fossa of the scapula
I: greater tubercle of the humerus
A: shoulder external rotation & ADD. stabilizes the humeral head in the glenoid cavity
N: suprascapular
Supraspinatus
O: supraspinous fossa of the scapula
I: greater tubercle of the humerus
A: shoulder ABD, stabilizes humeral head in glenoid cavity
N: suprascapular
Teres Minor
O: upper 2/3 lateral border of the scapula
I: greater tubercle of the scapula
A: shoulder external rotation & ADD. stabilizes humeral head in the glenoid cavity
N: axillary
Subscapularis
O: subscapular fossa of the scapula
I: lesser tubercle of the humerus
A: shoulder internal rotation. stabilizes humeral head in the glenoid cavity
N: subscapular
Biceps Brachii
O: Long- supraglenoid tubercle of the scapula
Short- coracoid process of the scapula
I: radial tuberosity of the radius
A: shoulder flexion, elbow flexion forearm supination
N: musculocutaneous
Brachialis
O: distal 1/2 of the humerus
I: coronoid process and ulnar tuberosity of the ulna
A: elbow flexion
N: musculocutaneous
Brachioradialis
O: lateral supracondylar ridge of humerus
I: styloid process of the radius
A: elbow flexion, pronates, & supinates to neutral
N: radial
Pronator Teres
O: medial epicondyle of the humerus & coronoid process of the ulna
I: mid-lateral surface of radius
A: forearm pronation & elbow flexion
N: median
Flexor Carpi Radialis
O: medial epicondyle of the humerus
I: bases of the 2nd & 3rd metacarpals
A: 1- wrist flexion & radial deviation
2- elbow flexion
N: median
Flexor Carpi Ulnaris
O: medial epicondyle of the humerus
I: pisiform & base of 5th metacarpal bone
A: 1- wrist flexion and ulnar deviation
2- elbow flexion
N: ulnar
Palmaris Longus
O: medial epicondyle of the humerus
I: palmar aponeurosis & flexor retinaculum
A: 1- wrist flexion
2- elbow flexion
N: median
Flexor Pollicis Longus
A: flexes the CMC & MCP & IP joint of the thumb & wrist
N: median
Flexor Digitorum Profundus
O: anterior/medial surface of proximal ulna
I: base of distal phalanx of fingers 2-5
A: 1- metacarpophalangeal, proximal interphalangeal & distal interphalangeal joint flexion of fingers 2-5
2- wrist flexion
N: 2nd & 3rd fingers: median nerve
4th & 5th fingers: ulnar nerve
Flexor Digitorum Superficialis
O: medial epicondyle of the humerus, coronoid process of the ulna, & the proximal radius
I: middle phalanx of digits 2-5
A: metcarpalphalangeal & proximal interphalangel joint flexion of fingers 2-5, & wrist flexion
N: median
Pronator Quadratus
O: medial-anterior distal ulna
I: lateral-anterior distal radius
A: forearm pronation
N: median
Supinator
O: lateral epicondyle of the humerus and adjacent ulna
I: anterior proximal-lateral radius
A: supinates the forearm
N: radial
Extensor Carpi Radialis Longus
O: lateral epicondyle
I: base of 2nd metacarpal
A: wrist extension and radial deviation
assists w/ elbow flexion when in pronation
N: radial
Extensor Carpi Radialis Brevis
O: lateral epicondyle of the humerus
I: base of 3rd metacarpal
A: wrist extension, radial deviation, & assists w elbow flexion when in pronation
N: radial
Extensor Carpi Ulnaris
O: lateral epicondyle of the humerus
I: base of 5th metacarpal
A: wrist extension & ulnar deviation
N: radial nerve
Extensor Digitorum
O: lateral epicondyle of the humerus
I: bases of distal phalanx of fingers 2-5
A: MCP, PIP, DIP joint extension fingers 2-5 & wrist flexion
N: radial
