the extrinsic and intrinsic hand muscles Flashcards
the origin, insertion, and action of flexor digitorum superficialis
O: Medial epicondyle humerus, coronoid process of ulna and radius
I: Sides of the middle phalanx 2-5
A: MCP, PIP flexion
the origin, insertion, and action of flexor digit profundus
O: Upper ¾ of ulna
I: Distal phalanx, 2-5
A: MCP, PIP & DIP flexion, 2-5
the origin, insertion, and action of extensor digitorum
O: Lateral epicondyle of humerus
I: Base distal phalanx, 2-5
A: MCP, PIP & DIP extension, 2-5
the origin, insertion, and action of extensor digit mini
O: Lateral epicondyle of humerus
I: Base distal phalanx, 5th finger
A: MCP, PIP & DIP extension, 5th finger
the origin, insertion, and action of extensor indicis
O: Distal Ulna
I: Base distal phalanx of
2nd finger
A: MCP, PIP & DIP extension, 2nd finger
the origin, insertion, and action of flexor pollcics longus
O: Anterior radius
I: Distal phalanx thumb
A: Thumb CMC, MCP & IP flexion
the origin, insertion, and action of abductor policis longus
O: Posterior radius,
interosseous membrane,
and middle ulna
I: Base 1st metacarpal
A: Thumb abduction
the origin, insertion, and action of extensor policies brevis
O: Posterior distal radius
I: Base proximal phalanx of thumb
A: Thumb MCP extension
the origin, insertion, and action of extensor policies longus
O: Middle posterior ulna and interosseous membrane
I: Base distal phalanx of thumb
A: Thumb CMC, MCP & IP extension
