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Gross Anatomy > Hand Muscles > Flashcards

Hand Muscles Flashcards

0
Q

Abductor Pollicis Brevis: Insertion

A

Lateral Base, Proximal Phalanx of Thumb

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1
Q

Abductor Pollicis Brevis: Origin

A

Flexor Retinaculum

Tubercles of Scaphoid & Trapezium

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2
Q

Abductor Pollicis Brevis: Innervation

A

Recurrent Branch of Median Nerve

C8, T1

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3
Q

Abductor Pollicis Brevis: Action

A

Abducts Thumb

Helps Oppose it

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4
Q

Flexor Pollicis Brevis: Origin

A

Flexor retinaculum

Tubercles of scaphoid & trapzium

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5
Q

Flexor Pollicis Brevis: Insertion

A

Lateral side, Base of Proximal Phalanx of Thumb

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6
Q

Flexor Pollicis Brevis: Innervation

A

Recurrent branch of Median Nerve

C8, T1

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7
Q

Flexor Pollicis Brevis: Action

A

Flexes Thumb

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8
Q

Opponens Pollicis: Origin

A

Flexor Retinaculum

Tubercles of scaphoid & trapezium

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9
Q

Opponents Pollicis: Insertion

A

Lateral side of 1st metacarpal

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10
Q

Opponents Pollicis: Innervation

A

Recurrent Branch of Median Nerve

C8, T1

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11
Q

Opponens Pollicis: Action

A

Oppose Thumb

- draws 1st metacarpal medially to center of palm and rotates medially

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12
Q

Adductor Pollicis: Oblique Head Origin

A

Bases of 2nd & 3rd metacarpals
Capitate
Adjacent carpals

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13
Q

Adductor Pollicis: Transverse Head

A

Anterior surface of shaft of 3rd metacarpal

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14
Q

Adductor Pollicis: Insertion

A

Medial side of base of proximal phalanx of thumb

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15
Q

Adductor Pollicis: Innervation

A

Deep Branch Ulnar Nerve

C8, T1

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16
Q

Adductor Pollicis: Action

A

Adducts thumb toward lateral border of palm

17
Q

Abductor Digiti Minimi: Origin

18
Q

Abductor Digiti Minimi: Insertion

A

Proximal Phalanx of 5th finger; medial side of base

19
Q

Abductor Digiti Minimi: Innervation

A

Deep Branch of Ulnar Nerve

C8, T1

20
Q

Abductor Digiti Minimi: Action

A

Abducts 5th finger

Assists in flexion of proximal parts

21
Q

Flexor Digiti Minimi Brevis: Origin

A

Hook of Hamate

Flexor Retinaculum

22
Q

Flexor Digiti Minimi Brevis: Insertion

A

Proximal Phalanx of 5th finger; medial side of base

23
Q

Flexor Digiti Minimi Brevis: Innervation

A

Deep Branch of Ulnar Nerve

C8, T1

24
Flexor Digiti Minimi Brevis: Action
Flexes proximal phalanx of 5th finger
25
Opponens Digiti Minimi: Origin
Hook of Hamate | Flexor Retinaculum
26
Opponens Digiti Minimi: Insertion
Medial Border of 5th metacarpal
27
Opponens Digiti Minimi: Innervation
Deep branch of Ulnar Nerve | C8, T1
28
Opponens Digiti Minimi: Action
Draws 5th metacarpal anterior and rotates it | - bringing 5th finger into opposition with thumb
29
Lumbricals: Origin
1&2: Lateral two tendons of FDP 3&4: Medial three tendons of FDP (Flexor digitorum profundus)
30
Lumbricals: Insertion
Lateral sides of extensor expansions of 2nd-5th fingers
31
Lumbricals: Innervation
Medial Nerve | C8, T1
32
Lumbricals: Action
Flex metacarpophalangeal joints (MP) | Extend intercarpalphalangeal joints 2-5 (IP)
33
Dorsal Interosseous 1-4: Origin
Adjacent sides of two metacarpals | Bipennate
34
Dorsal Interosseous: Insertion
Bases of proximal phalanges | Extensor expansions of 2-4 fingers
35
Dorsal Interosseous: Innervation
Deep branch of Ulnar Nerve | C8, T1
36
Dorsal Interosseous 1-4: Action
Abduct 2-4 fingers from axial line | Flex MP joints & extend IP joints with lumbricals
37
Palmar Interosseous 1-3: Origin
Palmar surface of 2, 4, and 5 metacarpals | Unipennate
38
Palmar Interosseous 1-3: Insertion
Bases of proximal phalanges | Extensor expansions of 2, 4, 5 fingers
39
Palmar Interosseous1-3: Innervation
Deep branch of Ulnar Nerve | C8, T1
40
Palmar Interosseous 1-3: Action
Adduct 2, 4, 5 fingers towards axial line | Flex MP joints & extend IP joints with lumbricals

Gross Anatomy (9 decks)

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