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2MB MSK Anatomy > Hand > Flashcards

Hand Flashcards

1
Q

List the groups of intrinsic muscles of the hand

A 
Thenar
Hypothenar
Lumbricals
Interossei
Palmaris brevis
Adductor pollicis
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2
Q

List the thenar muscles of the hand

A

Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

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3
Q

What is the origin + insertion of opponens pollicis?

A

Trapezium, flexor retinaculum

Lateral aspect of thumb

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4
Q

What is the nerve + arterial supply to opponens pollicis?

A

Median nerve

Superficial palmar arch

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5
Q

Which movements does opponens pollicis enable?

A

Thumb: flexion at CMJ (opposition)

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6
Q

What is the origin + insertion of abductor pollicis brevis?

A

Scaphoid, trapezium, flexor retinaculum

Proximal phalanx of thumb

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7
Q

What is the nerve + arterial supply to abductor pollicis brevis?

A

Median nerve

Superficial palmar arch

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8
Q

Which movements does abductor pollicis brevis enable?

A

Thumb: abduction, opposition, extension

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9
Q

What is the origin + insertion of flexor pollicis brevis?

A

Trapezium, flexor retinaculum

Proximal phalanx of thumb

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10
Q

What is the nerve + arterial supply to flexor pollicis brevis?

A

Median nerve

Superficial palmar arch

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11
Q

Which movements does flexor pollicis brevis enable?

A

Thumb: flexion

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12
Q

What is the main nerve supply to the thenar muscles?

A

Median nerve

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13
Q

List the hypothenar muscles of the hand

A

Opponens digiti minimi
Abductor digiti minimi
Flexor digiti minimi brevis

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14
Q

What is the origin + insertion of opponens digiti minimi?

A

Hamate

5th metacarpal

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15
Q

What is the nerve + arterial supply to opponens digiti minimi?

A

Ulnar nerve

Ulnar artery

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16
Q

Which movements does opponens digit minimi enable?

A

Little finger: rotation, opposition

17
Q

What is the origin + insertion of abductor digiti minimi?

A

Pisiform

Proximal phalanx of 5th digit

18
Q

What is the nerve + arterial supply to abductor digiti minimi?

A

Ulnar nerve

Ulnar artery

19
Q

Which movements does abductor digiti minimi enable?

A

Little finger: abduction

20
Q

What is the origin + insertion of flexor digiti minimi brevis?

A

Hamate

Proximal phalanx of 5th digit

21
Q

What is the nerve + arterial supply to flexor digiti minimi brevis?

A

Ulnar nerve

Ulnar artery

22
Q

Which movements does flexor digiti minimi enable?

A

Little finger: flexion

23
Q

What is the main nerve supply to the hypothenar muscles?

A

Ulnar nerve

24
Q

How many lumbrical muscles are in the hand?

A

4 (one for each finger)

25
Q

What is the origin + insertion of the lumbricals?

A

Flexor digitorum profundus tendon

Extensor hood

26
Q

What is the nerve supply to the lumbricals?

A 
Median nerve (1-2)
UInar nerve (3-4)
27
Q

Which movements do the lumbricals enable?

A

MCPJ: flexion
IPJ: extension

28
Q

How many interossei muscles are in the hand?

A

7

4 dorsal, 3 palmar

29
Q

What is the origin + insertion of the interossei?

A

Metacarpals

Proximal phalanges

30
Q

What is the nerve supply to the interossei?

A

Ulnar nerve

31
Q

Which movements do the interoessei enable?

A

Dorsal interossei: abduction at MCPJ
Palmar interossei: adduction at MCPJ
(PAd DAb)

32
Q

What is the origin + insertion of palmaris brevis?

A

Palmar aponeurosis

Skin of the palm

33
Q

What is the nerve supply to palmaris brevis?

A

Ulnar nerve

34
Q

Which movements does palmaris brevis enable?

A

Hand: improve grip

35
Q

What is the origin + insertion of adductor pollicis?

A

Capitate, 2nd + 3rd metacarpal

Proximal phalanx of thumb

36
Q

What is the nerve supply to adductor pollicis?

A

Ulnar nerve

37
Q

Which movements does adductor pollicis enable?

A

Thumb: adduction

38
Q

A useful mnemonic for the thenar + hypothenar hand muscles:

All For One And One For All

A 
Abductor digiti minimi
Flexor digiti minimi brevis
Opponense digiti minimi
Adductor pollicis
Opponens pollicis
Flexor pollicis brevis
Abductor pollicis brevis

2MB MSK Anatomy (10 decks)

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