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Spot Test > Muscles of the Hand > Flashcards

Muscles of the Hand Flashcards

1
Q

Intrinsic muscle compartments of the hand?

A 
Thenar
Hypothenar
Adductor
Central (extrinsic tendons and lumbricals)
Interosseus
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2
Q

Innervation of Thenar Muscles?

A

Recurrent Branch of the Median Nerve (C8-T1)

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3
Q

Function of Opponens Pollicis?

A

Medially rotates the thumb.

Deep to other thenar muscles.

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4
Q

Origin of Opponens Pollicis?

A

Flexor Retinaculum

Trapezium Tubercle

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5
Q

Insertion of Opponens Pollicis?

A

Lateral margin of Metacarpal 1

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6
Q

Function of Abductor Pollicis Brevis

A

Abduction at the Metacarpo-phalangeal joint

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7
Q

Origin of Abductor Pollicis Brevis

A

Flexor Retinaculum

Scaphoid/Trapezium Tubercles

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8
Q

Insertion of Abductor Pollicis Brevis

A

Proximal Phalanx

Extensor Hood

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9
Q

Function of Flexor Pollicis Brevis

A

Flexion at the Metacarpo-phalangeal joint

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10
Q

Origin of Flexor Pollicis Brevis

A

Flexor Retinaculum

Trapezium Tubercle

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11
Q

Insertion of Flexor Pollicis Brevis

A

Proximal Phalanx

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12
Q

Innervation of Hypothenar muscles

A

Deep Branch of Ulnar Nerve (C8-T1)

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13
Q

Function of Opponens Digiti Minimi

A

Lateral Rotation of 5th Metacarpal

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14
Q

Origin of Opponens Digiti Minimi

A

Flexor Retinaculum

Hook of Hamate

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15
Q

Insertion of Opponens Digiti Minimi

A

Medial aspect of Metacarpal 5

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16
Q

Function of Abductor Digiti Minimi

A

Abduction at Metacarpo-phalangeal joint

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17
Q

Origin of Abductor Digiti Minimi

A

Pisiform bone and Pisohamate Ligament

Flexor Carpi Ulnaris ligament

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18
Q

Insertion of Abductor Digiti Minimi

A

Proxmial Phalanx of Digit 5

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19
Q

Function of Flexor Digiti Minimi Brevis

A

Flexion at Metacarpo-phalangeal joint

20
Q

Origin of Flexor Digiti Minimi Brevis

A

Flexor Retinaculum

Hook of Hamate

21
Q

Insertion of Flexor Digiti Minimi Brevis

A

Proximal Phalanx of Digit 5

22
Q

Innervation of Adductor Pollicis?

A

Deep Branch of Ulnar Nerve (C8-T1)

23
Q

Which vessel runs between the transverse and oblique heads of Adductor Pollicis on its way into the anterior side of the hand?

A

Radial Artery

24
Q

Function of Adductor Pollicis

A

Adduction of thumb

Opposition of the thumb e.g. during grip

25
Q

Origin of Adductor Pollicis

A

Metacarpal 3 (TRANSVERSE HEAD)

Metacarpals 2&3 (OBLIQUE HEAD)

Oblique head is inferior

26
Q

Insertion of Adductor Pollicis

A

Proximal Phalanx and Extensor Hood of thumb

27
Q

Function of Lumbrical Muscles

A

Flexion of the Metacarpo-phalangeal joints WHILST extending the Interphalangeal Joints

28
Q

Origin of Lumbricals

A

Tendons of Flexor Digitorum Profundus

29
Q

Insertion of Lumbricals

A

Extensor Hoods

30
Q

Innervation of Lumbricals 1 and 2

A

LUMBRICALS 1&2: Digital Branch of Median Nerve (C8-T1)

31
Q

Innervation of Lumbricals 3 and 4

A

LUMBRICALS 3&4: Deep Branch of Ulnar Nerve (C8-T1)

32
Q

Which lumbricals are unipennate and which ones are bipennate?

A

Lumbricals 1 and 2 UNIPENNATE

Lumbricals 3 and 4 BIPENNATE

33
Q

How many Palmer Interossei; are they uni or bi pennate?

A

3 unipennate muscles

34
Q

Function of Palmer Interossei

A

Adduction of Digits about about Axial line

PAD

35
Q

Origin of Palmer Interossei

A

Sides of the Metacarpals 2, 4, and 5

36
Q

Insertion of Palmer Interossei

A

Extensor Hoods of Digits 2, 4, and 5

37
Q

Innervation of Palmer Interossei

A

Deep Branch of Ulnar Nerve (C8-T1)

38
Q

Function of Dorsal Interossei

A

Abduction of Digits about the Axial Line

DAB

39
Q

How many Dorsal Interossei; are they uni or bi pennate?

A

4 Bipennate muscles

40
Q

Origin of Dorsal Interossei

A

Sides of the adjacent Metacarpals

41
Q

Insertion of Dorsal Interossei

A

Extensor Hoods and Proximal Phalanges of Digits 2, 3, and 4

42
Q

Innervation of Dorsal Interossei

A

Deep Branch of Ulnar Nerve (C8-T1)

43
Q

Function of Palmaris Brevis

A

Improves grip in the hand by pulling the skin taught

44
Q

Origin of Palmaris Brevis

A

Skin of medial margin of hand

45
Q

Insertion of Palmaris Brevis

A

Palmer Aponeurosis/ Flexor Retinaculum

46
Q

Innervation of Palmaris Brevis

A

Superficial Branch of the Ulnar Nerve (C8-T1)

Spot Test (16 decks)

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