the extrinsic and intrinsic hand muscles Flashcards

1
Q

the origin, insertion, and action of flexor digitorum superficialis

A

O: Medial epicondyle humerus, coronoid process of ulna and radius

I: Sides of the middle phalanx 2-5

A: MCP, PIP flexion

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2
Q

the origin, insertion, and action of flexor digit profundus

A

O: Upper ¾ of ulna
I: Distal phalanx, 2-5
A: MCP, PIP & DIP flexion, 2-5

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3
Q

the origin, insertion, and action of extensor digitorum

A

O: Lateral epicondyle of humerus
I: Base distal phalanx, 2-5
A: MCP, PIP & DIP extension, 2-5

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4
Q

the origin, insertion, and action of extensor digit mini

A

O: Lateral epicondyle of humerus
I: Base distal phalanx, 5th finger
A: MCP, PIP & DIP extension, 5th finger

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5
Q

the origin, insertion, and action of extensor indicis

A

O: Distal Ulna
I: Base distal phalanx of
2nd finger
A: MCP, PIP & DIP extension, 2nd finger

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6
Q

the origin, insertion, and action of flexor pollcics longus

A

O: Anterior radius
I: Distal phalanx thumb
A: Thumb CMC, MCP & IP flexion

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7
Q

the origin, insertion, and action of abductor policis longus

A

O: Posterior radius,
interosseous membrane,
and middle ulna
I: Base 1st metacarpal
A: Thumb abduction

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8
Q

the origin, insertion, and action of extensor policies brevis

A

O: Posterior distal radius
I: Base proximal phalanx of thumb
A: Thumb MCP extension

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9
Q

the origin, insertion, and action of extensor policies longus

A

O: Middle posterior ulna and interosseous membrane
I: Base distal phalanx of thumb
A: Thumb CMC, MCP & IP extension

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