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Musculoskeletal System > Muscles of Hand > Flashcards

Muscles of Hand Flashcards

1
Q

FLEXOR RETINACULUM

A

Roof of Carpal Tunnel
DEEP TO IT:
- Flexor Digiforum Superficialis
- Flexor Digitorum Profundus
- Flexor Pollicis Longus
- Median Nerve
THROUGH IT:
- Flexor Carpi Radialis

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2
Q

LUMBRICALS (Origin)

A

Tendons Flexor Digitorum Profundus

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3
Q

LUMBRICALS (Insertion)

A

Lateral sides extensor hoods

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4
Q

LUMBRICALS (Action)

A

Flexion metacarpophalangeal joints
Extends dorsal interphalangeal joints

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5
Q

LUMBRICALS (Innervation)

A

LATERAL 2 lumbricals = Median Nerve
MEDIAL 2 lumbricals = Ulnar Nerve

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6
Q

ABDUCTOR POLLICIS BREVIS [THENAR] (Origin)

A

Tubercle of Trapezium and Scaphoid
Adjacent flexor retinaculum

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7
Q

ABDUCTOR POLLICIS BREVIS [THENAR] (Insertion)

A

Proximal phalanx and extensor hood of thumb

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8
Q

ABDUCTOR POLLICIS BREVIS [THENAR] (Action)

A

Abducts thumb at metacarpophalangeal joint

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9
Q

ABDUCTOR POLLICIS BREVIS [THENAR] (Innervation)

A

Recurrent branch of Median Nerve

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10
Q

FLEXOR POLLICIS BREVIS [THENAR] (Origin)

A

Tubercle of Trapezium and flexor retinaculum

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11
Q

FLEXOR POLLICIS BREVIS [THENAR] (Insertion)

A

Proximal phalanx of thumb

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12
Q

FLEXOR POLLICIS BREVIS [THENAR] (Action)

A

Flexes thumb at metacarpophalangeal joint

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13
Q

FLEXOR POLLICAS BREVIS [THENAR] (Innervation)

A

Recurrent branch of Median Nerve

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14
Q

OPPONENS POLLICIS [THENAR] (Origin)

A

Tubercle of Trapezium and flexor retinaculum

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15
Q

OPPONENS POLLICIS [THENAR] (Insertion)

A

Lateral margin, Palmar surface 1st metacarpal

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16
Q

OPPONENS POLLICIS [THENAR] (Action)

A

Medially Rotates thumb

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17
Q

OPPONENS POLLICIS [THENAR] (Innervation)

A

Recurrent branch of Median Nerve

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18
Q

ADDUCTOR POLLICIS (Origin)

A

OBLIQUE HEAD
- Capitate and bases 2nd and 3rd metacarpals
TRANSVERSE HEAD
- Anterior surface shaft of 3rd metacarpal

19
Q

ADDUCTOR POLLICIS (Insertion)

A

Base proximal phalanx thumb
Extensor hood of thumb

20
Q

ADDUCTOR POLLICIS (Action)

A

Adducts thumb

21
Q

ADDUCTOR POLLICIS (Innervation)

A

Deep branch of Ulnar Nerve

22
Q

ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Origin)

A

Pisiform and pisohamate ligament
Tendon Flexor Carpi Ulnaris

23
Q

ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Insertion)

A

Proximal phalanx little finger

24
Q

ABDUCTOR DIGITI MINIM [HYPOTHENAR] (Action)

A

Abducts little finger at metacarpophalangeal joint

25
Q

ABDUCTOR DIGITI MINIMI [HYPOTHENAR] (Innervation)

A

Deep branch of Ulnar Nerve

26
Q

FLEXOR DIGITI MINIMI [HYPOTHENAR] (Origin)

A

Hook of Hamate and flexor retinaculum

27
Q

FLEXOR DIGITI MINIMI [HYPOTHENAR] (Insertion)

A

Proximal phalanx little finger

28
Q

FLEXOR DIGITI MINIMI [HYPOTHENAR] (Action)

A

Flexes little finger at metacarpophalangeal joint

29
Q

FLEXOR DIGITI MINIMI [HYPOTHENAR] (Innervation)

A

Deep branch of Ulnar Nerve

30
Q

OPPONENS DIGITS MINIMI [HYPOTHENAR] (Origin)

A

Hook of Hamate and flexor retinaculum

31
Q

OPPONENS DIGITI MINIMI [HYPOTHENAR] (Insertion)

A

Medial aspect 5th metacarpal

32
Q

OPPONENS DIGITI MINIMI [HYPOTHENAR] (Action)

A

Laterally Rotates 5th metacarpal

33
Q

OPPONENS DIGITI MINIMI [HYPOTHENAR] (Innervation)

A

Deep branch of UInar Nerve

34
Q

PALMAR INTEROSSEUS (Origin)

A

Sides of metacarpals

35
Q

PALMAR INTEROSSEUS (Insertion)

A

Extensor hoods index, ring and little finger
Proximal phalanx index, ring and little finger

36
Q

PALMAR INTEROSSEUS (Action)

A

Adduction of index, ring and little finger
Extension at dorsal interphalangeal joint

37
Q

PALMAR INTEROSSEUS (Innervation)

A

Deep branch of Ulnar Nerve

38
Q

EXTENSOR RETINACULUM

A

COMPARTMENT 1:
- Abductor Pollicis Longus
- Extensor Pollicis Brevis
COMPARTMENT 2:
- Extensor Carpi Radialis Longus
- Extensor Carpi Radialis Brevis
COMPARTMENT 3:
- Extensor Pollicis Longus
COMPARTMENT 4:
- Extensor Digitorum
- Extensor Indicis
COMPARTMENT 5:
- Extensor Digiti Minimi
COMPARTMENT 6:
- Extensor Carpi Ulnaris

39
Q

DORSAL INTEROSSEUS (Origin)

A

Adjacent metacarpal

40
Q

DORSAL INTEROSSEOUS (Insertion)

A

Extensor hoods index, ring and middle finger
Proximal phalanx index, ring and middle finger

41
Q

DORSAL INTEROSSEUS (Action)

A

Abduction of index, ring and middle finger
Extension at dorsal interphalangeal joint

42
Q

DORSAL INTEROSSEUS (Innervation)

A

Deep branch of Ulnar Nerve

43
Q

EXTENSOR HOOD

A

Tendons of Extensor Digitorum and Extensor Pollicis Longus
Interossei, Lumbricals and Abductor Digiti Minimi on sides
Adductor Pollicis and Abductor Pollicis Brevis insert (thumb)

Musculoskeletal System (17 decks)

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