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Anatomy UE

Muscles Brachioradialis-EPL/ muscle diagram

QuestionAnswer
Brachioradialis PA Proximal 2/3 of lateral supraepicondylar ridge of humerus.
Brachioradialis DA Lateral surface of distal end of radius proximal to styloid process.
Brachioradialis A Elbow flexion (maximal in mid-pronated position).
Brachioradialis N Radial (C5, C6, C7).
Extensor Carpi Radialis Longus PA Lateral supraepicondylar ridge of humerus.
Extensor Carpi Radialis Longus DA Dorsal aspect of base of 2nd metacarpal.
Extensor Carpi Radialis Longus A Wrist extension, radial deviation.
Extensor Carpi Radialis Longus N Radial (C6, C7).
Extensor Carpi Radialis Brevis PA Lateral epicondyle of humerus (common extensor origin).
Extensor Carpi Radialis Brevis DA Dorsal aspect of base of 3rd metacarpal.
Extensor Carpi Radialis Brevis A Wrist extension, radial deviation.
Extensor Carpi Radialis Brevis N Radial (deep branch) (C7, C8).
Extensor Digitorum PA Lateral epicondyle of humerus (common extensor origin).
Extensor Digitorum DA Extensor expansions of 2nd – 5th digits.
Extensor Digitorum A MP extension. DIP and PIP extension via tension of extensor expansion.
Extensor Digitorum N Radial (posterior interosseous) (C7, C8).
Extensor Digiti Minimi PA Lateral epicondyle of humerus (common extensor origin).
Extensor Digiti Minimi DA Extensor expansion of 5th digit.
Extensor Digiti Minimi A MP, DIP, PIP extension of 5th digit.
Extensor Digiti Minimi N Radial (posterior interosseous) (C7, C8).
Extensor Carpi Ulnaris PA Lateral epicondyle of humerus, posterior border of the ulna via a shared aponeurosis.
Extensor Carpi Ulnaris DA Dorsal aspect of base of 5th metacarpal.
Extensor Carpi Ulnaris A Wrist extension, ulnar deviation.
Extensor Carpi Ulnaris N Radial (posterior interosseous) (C7, C8).
Supinator PA Lateral epicondyle of humerus, radial collateral and anular ligament, supinator fossa, crest of ulna.
Supinator DA Lateral, posterior, and anterior surfaces of the proximal 1/3rd of radius.
Supinator A Forearm supination.
Supinator N Radial (deep branch) (C7, C8).
Extensor Indicis PA Posterior surface of distal third of ulna and interosseous membrane.
Extensor Indicis DA Extensor expansion of 2nd digit.
Extensor Indicis A MP, DIP, PIP extension of 2nd digit enabling its independent extension. Wrist extension.
Extensor Indicis N Radial (posterior interosseous) (C7, C8).
Abductor Pollicis Longus PA Posterior surface of proximal halves of ulna, radius, and interosseous membrane.
Abductor Pollicis Longus DA Base of 1st metacarpal.
Abductor Pollicis Longus A CM abduction and extension of 1st digit.
Abductor Pollicis Longus N Radial (posterior interosseous) (C7, C8).
Extensor Pollicis Longus PA Posterior surface of middle 1/3rd of ulna and interosseous membrane.
Extensor Pollicis Longus DA Dorsal aspect of base of distal phalanx of 1st digit.
Extensor Pollicis Longus A CMC, MP, IP extension of 1st digit.
Extensor Pollicis Longus N Radial (posterior interosseous) (C7, C8).
Created by: txst fall 2009
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