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20 Cards in this Set

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Originates from proximal 2/3 of lateral supracondylar ride of humerus. Inserts at distal radius, lateral side just above styloid process. Flexes Forearm. Innervated by Radial Nerve
Brachioradialis
Originates from distal 1/3 of lateral supracondylar ridge of humerus. Inserts on base of 2nd metacarpal. Extends and abducts hand. Innervated by Radial nerve
Extensor Carpi Radialis Longus
Originates from lateral epicondyle of humerus. Inserts on base of 3rd metacarpal. Extends hand; some abduction of hand. Innervated by Deep Radial nerve
Extensor Carpi Radialis Brevis
Originates from lateral epicondyle of humerus. Inserts via 4 tendons to base of middle and distal phalanges of digits 2-5. Extends digits 2-5 at metacarpophalangeal & interphalangeal joints; extends hand. Innervated by Posterior Interosseous nerve
Extensor Digitorum
Originates from lateral epicondy of humerus. Inserts via extensor expansion of 5th digit. Extends and abducts 5th digit. Innervated by Posterior Interosseous nerve
Extensor Digiti Minimi
Originates from lateral epicondyle of humerus and posterior border of ulna. Inserts at base of 5th metacarpal. Extends and adducts hand. Innervated by posterior Interosseous nerve
Extensor Carpi Ulnaris
Originates from lateral epicondlye of humerus, capsule of elbow joint, and supinator crest of ulna. Inserts at proximal 1/3 radius-posterior, lateral, and anterior. Supinates forearm. Innervated by Deep Radial nerve
Supinator
Originates from middle 1/3 of forearm-posterior ulna, interosseous membrane and radius. Inserts at base of 1st metacarpal. Abducts thumb and hand; extends thumb at carpometacarpal joint. Innervated by Posterior Interosseous nerve.
Abductor Pollicis Longus
Originates from distal 1/3, dorsal radius & interosseous membrane. Inserts at base of proximal phalanx of thumb. Extends proximal phalanx of thumb at metacarpophalangeal joint. Innervated by Posterior Interosseous nerve (from Radial nerve)
Extensor Pollicis Brevis
Originates from distal 1/3, dorsal ulna & interosseous membrane. Inserts at extensor expansion of index finger (digit 2). Extends proximal phalanx of index finger at metacarpophalangeal joint. Innervated by Posterior Interosseous nerve (from Radial Nerve).
Extensor Indicis
Originates from middle 1/3, dorsal ulna & interosseous membrane. Inserts at base of distal phalanx of thumb. Extends distal phalanx of thumb. Innervated by Posterior Interosseous nerve (from Radial nerve)
Extensor Pollicis Longus
Part of extensor digitorum that inserts onto proximal end of middle phalanx
Central Tendon
Part of extensor digitorum that inserts onto proxima end of distal phalanx
2 lateral tendons
Central and laterl tendons of extensor digitorum are united laterally by transverse fibers and forms this
Extensor Hood
Caused from repetitive foreful supination and extension of wrist (backhand stroke). Pain felt in lateral elbow-inflammation (tendinitis) of common extensor tendon
Tennis Elbow
Before crossing elbow-motor branches to Brachioradialis & Extensor Carpi Radialis Longus muscle.
Passes elbow anterior to lateral epicondyle, deep to Brachioradialis muscle.
In proximal forearm, divides into Superficial and Deep Radial nerve
Radial Nerve
Runs down lateral-anterior forearm, deep to Brachioradialis muscle (with Radial artery).
At radial (lateral) border of wrist, passes to dorsal hand.
Cutaneous to lateral side of dorsal hand and proximal ends of lateral 2.5 digits.
Superficial Radial Nerve
Near lateral epicondyle, innervates Extensor Carpi Radialis Brevis & Supinator muscles.
Passes around lateral neck of radius & thru Supinator-name changes to Posterior Interosseous Nerve when it emerges from Supinator
Deep Radial Nerve
Runs with Posterior Interosseous artery down posterior side of interosseous membrane.
Supplies remaining muscles of posterior compartment
Posterior Interosseous Nerve
Division of brachial artery.
Runs down forearm deep to Brachioradialis muscle.
Follows fascial septum separating extensor and flexor forearm muscles.
Pulse felt on radial (lateral) side of wrist.
Gives off superficial radial artery.
At lateral wrist, artery crosses to dorsal hand and enters Anatomical Snuff Box. Continues between bases of 1st and 2nd metacarpal bones to enter deep palm of hand.
Radial Artery