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Clinical Anatomy 1 - Upper Extremity > Muscles of The Hand (Intrinsic) > Flashcards

Muscles of The Hand (Intrinsic) Flashcards

1
Q

Abductor digiti minimi - Attachments

A

FROM
*pisiform

TO
*ulnar side of the base of the proximal phalanx of the 5th digit

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2
Q

Abductor digiti minimi - Actions

A

abducts 5th digit

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3
Q

Abductor digiti minimi - Innervation

A

deep branch of the ulnar nerve
C8-T1

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4
Q

Abductor pollicis brevis - Attachments

A

FROM
*transverse carpal lig.

TO
*radial side of the base of the proximal phalanx of the thumb
*tubercle of trapezium

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5
Q

Abductor pollicis brevis - Actions

A

abducts thumb

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6
Q

Abductor pollicis brevis - Innervation

A

recurrent branch of the median nerve
C6-T1

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7
Q

Adductor pollicis - Attachments

A

FROM
*capitate & 2nd & 3rd metacarpals (oblique head)
*palmar aspect of the 3rd metacarpal (transverse head)

TO
*base of the proximal phalanx of the thumb

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8
Q

Adductor pollicis - Actions

A

adducts thumb

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9
Q

Adductor pollicis - Innervation

A

deep branch of the ulnar nerve
C8-T1

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10
Q

Dorsal interossei - Attachments

A

FROM
*adjacent sides of the metacarpals

TO
*proximal phalangeal bases
*dorsal digital expansions of digits 2-4

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11
Q

Dorsal interossei - Actions

A

abducts (metacarpophalangeal), flexes (metacarpophalangeal) & extends (interphalangeal) digits 2-4

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12
Q

Dorsal interossei - Innervation

A

deep branch of the ulnar nerve
C8-T1

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13
Q

Flexor digiti minimi brevis - Attachments

A

FROM
*hamate

TO
*ulnar side of the base of the proximal phalanx of the 5th digit

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14
Q

Flexor digiti minimi brevis - Actions

A

flexes (metacarpophalangeal) 5th digit

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15
Q

Flexor digiti minimi brevis - Innervation

A

deep branch of the ulnar nerve
C8-T1

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16
Q

Flexor pollicis brevis - Attachments

A

FROM
*transverse carpal lig.
*trapezium

TO
*radial side of the base of the proximal phalanx of the thumb

NOTE: deep head blends with opponens pollicis

17
Q

Flexor pollicis brevis - Actions

A

flexes (metacarpophalangeal) thumb

18
Q

Flexor pollicis brevis - Innervation

A

*recurrent branch of the median nerve (superficial head)
*deep branch of ulnar nerve (deep head)

(superficial head C6-T1; deep head C8-T1)

19
Q

Lumbricals - Attachments

A

FROM
*tendons of the flexor digitorum profundus

TO
*radial side of the dorsal digital expansions of digits 2-5

20
Q

Lumbricals - Actions

A

flexes metacarpophalangeal &extends interphalangeal joints of digits 2-5

21
Q

Lumbricals - Innervation

A

*deep branch of the ulnar nerve (3rd & 4th lumbricals C8-T1)
*median nerve (1st & 2nd lumbricals C7-8-T1)

22
Q

Opponens digiti minimi - Attachments

A

FROM
*hook of the hamate

TO
*ulnar margin of the shaft of the 5th metacarpal

23
Q

Opponens digiti minimi - Actions

A

opposition of 5th digit to thumb

24
Q

Opponens digiti minimi - Innervation

A

deep branch of the ulnar nerve
C8-T1

25
Q

Opponens pollicis - Attachments

A

FROM
*transverse carpal lig.
*trapezium

TO
*palmar surface of the 1st metacarpal

26
Q

Opponens pollicis - Actions

A

opposition of thumb to 5th digit

27
Q

Opponens pollicis - Innervation

A

recurrent branch of the median nerve
C6-T1

28
Q

Palmar interossei - Attachments

A

FROM
*palmar aspects of metacarpals 2, 4 & 5

TO
*dorsal digital expansions of digits 2, 4, 5

29
Q

Palmar interossei - Actions

A

adducts (metacarpophalangeal), flexes (metacarpophalangeal) & extends (interphalangeal) digits 2, 4 & 5

30
Q

Palmar interossei - Innervation

A

deep branch of the ulnar nerve
C8-T1

Clinical Anatomy 1 - Upper Extremity (11 decks)

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