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Anatomy 2- Practical Exam > Muscles of the Fingers > Flashcards

Muscles of the Fingers Flashcards

1
Q

What are the attachments of extensor digitorum?

A

O: lateral epicondyle of humerus via CEO

I: base of middle and distal phalanx of 2nd-5th digits via DDE

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2
Q

what is the nerve supply of extensor digitorum?

A

posterior interosseous branch of radial nerve - C7,C8

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3
Q

what is the action of extensor digitiorum?

A

Extension of the DIP, PIP, MCP and wrist

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4
Q

what is the function of extensor digitorum?

A

releasing a grip

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5
Q

What are the attachments of extensor indicis?

A

O: lower part of posterior surface of ulna and adjacent interosseous membrane

I: into the DDE on proximal phalanx of index finger

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6
Q

what is the nerve supply of extensor indicis?

A

posterior interosseous branch of the radial nerve - C7, C8

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7
Q

what is the action of extensor indicis?

A

aids extensor digitorum to extend the DIP, PIP and MCP of the index finger - enabling independent extension

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8
Q

what is the function of extensor indicis?

A

releasing a grip

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9
Q

what are the attachments of extensor digiti minimi?

A

O: lateral epicondyle of humerus via CEO

I: DDE on base of middle phalanx of little finger

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10
Q

what is the nerve supply of extensor digiti miimi?

A

posterior interosseous branch of radial nerve - C7, C8

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11
Q

What is the action of extensor digiti minimi?

A

assists extensor digitorum to extend MCP and PIP of little finger

abduction of little finger

extension of the wrist

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12
Q

function of extensor digiti minimi

A

releasing grip

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13
Q

Attachments of flexor digitorum superficialis

A

O: Humeroulnar head - medial epicondyle of humerus, ulnar collateral ligament and medial part of coronoid process of ulna
Radial head - upper 2/3rd anterior border of radius

I: base of middle phalanx of 2nd - 5th digits

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14
Q

What is the innervation of flexor digitorum superficialis

A

median nerveC7, C8, T1

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15
Q

what is the action of flexor digitorum superficialis

A

flexion of PIP, MCP and wrist

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16
Q

what is the function of flexor digitorum superficialis

A

carrying shopping

17
Q

Attachments of flexor digitorum profundus

A

O: upper 3/4 anterior and medial surfaces of ulna, middle 1/3rd interosseous membrane and medial part of coronoid process of ulna, posterior border of ulna via aponeruosis

I: base of distal phalanx of 2nd - 5th digits

18
Q

what is the nerve supply to flexor digitorum profundus

A

medial part: ulnar nerve - C8, T1

lateral part: anterior interosseous branch of median nerve - C8, T1

19
Q

what is the action of flexor digitorum profundus

A

flexes DIP, PIP, MCP and wrist

20
Q

what is the function of flexor digitorum profundus

A

Writing with a pen

Anatomy 2- Practical Exam (17 decks)

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