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posterior forearm and dorsum of hand
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10/4/12
Terms in this set (44)
What does the posterior interosseous artery arise from?
ulnar artery
What does the posterior interosseous nerve arise from?
radial nerve
What is Volkmann's syndrome?
deformity of the hand, fingers, and wrist caused by injury to the muscle of the forearm
What are possible causes of Volkmann's syndrome?
fracture at distal humerus that compromises the brachial artery
What is the blood supply of the post lateral compartment?
posterior interosseous artery
What is the innervation of the post-lateral compartment?
radial nerve
What is the origin of the anconeous?
lateral epicondyle
What is the insertion of the anconeous?
ulna
What is the action of the anconeous?
extension of elbow
What is the innervation for all muscles in the posterior forearm?
radial nerve
What is the origin of the supinator?
partially on lateral epicondyle
What is the insertion of the supinator?
radius
What is the action of the supinator?
supination
What is the origin of the brachioradialis?
supraepicondylar
What is the insertion of the brachioradialis?
radius
What is the origin of the extensor carpi radialis longus?
supraepicondylar
What is the insertion of the extensor carpi radialis longus?
base of the 2nd metacarpal
What is the action of the extensor carpi radialis longus?
extensor of the wrist
What is the origin of the extensor carpi radialis brevis?
lateral epicondyle
What is the insertion of the extensor carpi radialis brevis?
base of the 3rd metacarpal
What is the action of the extensor carpi radialis brevis?
extensor of the wrist
What is the origin of the extensor carpi ulnaris?
partially on lateral epicondyle
What is the insertion of the extensor carpi ulnaris?
base of the 5th metacarpal
What is the action of the extensor carpi ulnaris?
extensor of the wrist
What is the origin of the abductor pollicis longus?
ulna, interosseous membrane, and radius
What is the insertion of the abductor pollicis longus?
base of the 1st metacarpal
What is the action of the abductor pollicis longus?
abduction of thumb at wrist
What is the origin of the extensor policis brevis?
interosseous membrane and radius
What is the insertion of the extensor policis brevis?
base of the 1st phalanx (proximal phalange) of the thumb
What is the action of the extensor policis brevis?
extension of the thumb
What is the origin of the extensor policis longus?
ulna and interosseous membrane
What is the insertion of the extensor policis longus?
base of the 2nd phalanx (distal phalange) of the thumb
What is the action of the extensor policis longus?
extension of thumb
What is the origin of the extensor digitorum?
lateral epicondyle
What is the insertion of the extensor digitorum?
base of the distal and intermediate phalanges of the fingers (central bands and lateral bands?)
What is the action of the extensor digitorum?
extension of the fingers
What is the origin of the extensor indicis?
ulna and interosseous membrane
What is the insertion of the extensor indicis?
base of the distal and intermediate phalanges of 2nd finger.
What is the action of the extensor indicis?
extension of the index finger
What is the origin of the extensor digiti minimi?
lateral epicondyle
What is the insertion of the extensor digiti minimi?
base of the distal and intermediate phalanges of 5th finger.
What is the action of the extensor digiti minimi?
extension of the pinky.
What are the three tendons that form the anatomical snuff box? What forms the floor?
abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus
floor - scaphoid, trapezium, styloid process of the radius, and base of the 1st metacarpal
What passes through the snuff box?
radial artery and the superficial branch of the radial nerve
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