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Anatomy > Thenar Muscles > Flashcards

Thenar Muscles Flashcards

1
Q

What is the MA of the Flexor Pollicis Brevis (FPB)?

A

Flexion of the thumb at the carpometacarpal and metacarpophalangeal Joints

Assist in opposition of the thumb

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2
Q

What is the PA of the Flexor Pollicis Brevis (FPB)?

A

Flexor retinaculum and tubercles of scaphoid & trapezium

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3
Q

What is the DA of the Flexor Pollicis Brevis (FPB)?

A

Base of proximal phalanx of thumb

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4
Q

What is the N for the Flexor Pollicis Brevis (FPB)?

A

Superficial Head: Median nerve (recurrent branch) (C8 & T1)

Deep Head: Ulnar nerve (deep branch) (C8 & T1)

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5
Q

What is the MA of the Abductor Pollicis Brevis (APB)?

A

Abduction of the thumb at the carpometacarpal and metacarpophalangeal joints

Assists in opposition of the thumb

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6
Q

What is the PA of the Abductor Pollicis Brevis (APB)?

A

Flexor retinaculum and tubercles of scaphoid & trapezium

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7
Q

What is the DA of the Abductor Pollicis Brevis (APB)?

A

Base of proximal phalanx of thumb

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8
Q

What is the N for the Abductor Pollicis Brevis (APB)?

A

Median nerve (recurrent branch) (C8 & T1)

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9
Q

What is the MA of the Opponens Pollicis (OP)?

A

Opposition of the thumb- draws 1st metacarpal medially to center of palm and rotates it medially

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10
Q

What is the PA of the Opponens Pollicis (OP)?

A

Flexor retinaculum and tubercles of scaphoid & trapezium

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11
Q

What is the DA of the Opponens Pollicis (OP)?

A

1st metacarpal

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12
Q

What is the N for the Opponens Pollicis (OP)?

A

Median nerve (recurrent branch) (C8 & T1)

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Anatomy (29 decks)

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