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MSK AM > Hand muscles > Flashcards

Hand muscles Flashcards

1
Q

What is the action of the adductor pollicis?

A

Adduct thumb

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2
Q

What is the blood supply of the adductor pollicis?

A

Deep palmar arch

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3
Q

What is the innervation of the adductor pollicis?

A

Ulnar nerve

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4
Q

What are the attachments of the adductor pollicis?

A

Transverse head= 3rd metacarpal
Oblique head= 2nd and 3rdmetacarpal, trapezoid and capitate bones
Base of proximal phalanx of thumb and ulnar sesamoid

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5
Q

What is the action of the thenar eminence?

A

Control thumb

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6
Q

What is the blood supply of the thenar eminence?

A

Superficial palmar arch

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7
Q

What is the innervation of the thenar eminence?

A

Median nerve

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8
Q

How many muscles make up the thenar eminence?

A

3

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9
Q

What is the action of the hypothenar eminence?

A

Control pinkie

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10
Q

What is the blood supply of the hypothenar eminence?

A

Ulnar artery

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11
Q

What is the innervation if the hypothenar muscles?

A

Ulnar nerve

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12
Q

What are the attachments of the hypothenar muscles?

A

5th metacarpal

Proximal phalanx

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13
Q

What is the function of the dorsal interossei?

A

Abduct fingers

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14
Q

What is the blood supply of the dorsal interossei?

A

Dorsal and palmar metacarpal arteries

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15
Q

What is the innervation of the dorsal interossei?

A

Ulnar nerve

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16
Q

What are the attachments of the dorsal interossei?

A

Metacarpals

Proximal phalanges and extensor expansions

17
Q

What is the action of the palma interossei?

A

Adduct fingers

18
Q

What is the blood supply of the palmar interossei?

A

Deep palmar arch

19
Q

What is the innervation of the palmar interossei?

A

Ulnar nerve

20
Q

What are the attachments of the palmar interossei?

A

Sides of metacarpals

Bases of proximal phalanges, extensor expansions

21
Q

What are the actions of the 1st and 2nd lumbricals?

A

Flex MCP joint

Extend IP joint

22
Q

What is the blood supply of the 1st and 2nd lumbricals?

A

Palmar arches, arteries and dorsal digital artery

23
Q

What is the innervation of the 1st and 2nd lumbricals?

A

Median nerve

24
Q

What are the attachments of the 1st and 2nd lumbricals?

A

Flexor digitorum profundus

Extensor expansion

25
Q

What are the actions of the 3rd and 4th lumbricals?

A

Flex MCP joint

Extend IP joint

26
Q

What is the blood supply of the 3rd and 4th lumbricals?

A

Palmar arches and arteries

Dorsal digital artery

27
Q

What is the innervation of the 3rd and 4th lumbricals?

A

Ulnar nerve

28
Q

What are he attachments of the 3rd and 4th lumbricals?

A

Flexor digitorum profundus

Extensor expansion

MSK AM (37 decks)

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