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*MSK > Anatomy of Hand and Wrist > Flashcards

Anatomy of Hand and Wrist Flashcards

1
Q

Which nerve extends the wrist?

A

Radial nerve

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2
Q

Name the bones of the hand (L, starting with S, going clockwise)?

A 
Scaphoid
Trapezium
Trapezoid
Capitate
Hamate
Triquetrum
Pisiform
Lunate
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3
Q

What type of joint is the distal radio-ulnar joint?

A

Synovial pivot

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4
Q

What type of joint is the wrist joint?

A

Synovial condyloid

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5
Q

What type of joint is the 1st carpo-metacarpal joint?

A

Synovial saddle

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6
Q

What type of joint is the 2nd-5th carpo-metacarpal joint?

A

Synovial condyloid

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7
Q

The ulnar artery is the main contributor to what vessel?

A

Superficial palmar arch

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8
Q

The radial artery is the main contributor to what vessel?

A

Deep palmar arch

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9
Q

Where does the subclavian artery become the axillary?

A

Lateral border of first rib

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10
Q

Where does the axillary artery become the brachial?

A

Border of teres major

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11
Q

What are the superficial veins of the upper limb?

A

Dorsal venous arch
Cephalic vein (lateral)
Basilic vein (medial)
Median cubital vein

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12
Q

What is the lymphatic drainage of the arm?

A

Axillary lymph node

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13
Q

What are the first layer of medial forearm muscles?

A

Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

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14
Q

What are the second layer of medial forearm muscles?

A

Flexor digitorum superficialis

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15
Q

What are the third layer of medial forearm muscles?

A

Flexor pollicis longus
Flexor digitorum profundus
Pronator quadratus

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16
Q

What muscles abduct the wrist?

A

Flexor carpi radialis
Extensor carpi radialis longus
Extensor carpi radialis brevis

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17
Q

What muscles adduct the wrist?

A

Flexor carpi ulnaris

Extensor carpi ulnaris

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18
Q

What muscle pronate the wrist?

A

Pronator teres

Pronator quadratus

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19
Q

Flexor digitorum superficialis attaches to what?

A

Middle phalanges of digits 2-5

20
Q

Flexor digitorum profundus attaches to what?

A

Distal phalanges

21
Q

Flexor pollicis longus attaches to what?

A

Distal phalange

22
Q

What are the functions of the posterior forearm muscles?

A

Extensors of wrist/digits
Adduct
Abduct
Supinate

23
Q

Which muscles supinate the wrist?

A

Biceps brachii

Supinator

24
Q

What sheath sits over the extensor tendons of the wrists?

A

Extensor retinaculum

25
Q

What sheath sits over the flexor tendons of the wrist?

A

Flexor retinaculum

26
Q

What structure sits in the anotomical snuff box?

A

Radial artery

27
Q

What is the innervation of the flexors of the arm?

A

Musculocutaneous nerve

28
Q

What is the innervation of the extensors of the arm?

A

Radial nerve

29
Q

What is the innervation of the flexors of the forearm?

A

Median nerve
Ulnar nerve
(brachioradialis - Radial nerve)

30
Q

What is the innervation of the extensors of the forearm?

A

Radial nerve

31
Q

What is the innervation of brachioradialis?

A

Radial nerve

32
Q

What are the muscle groups of the hand?

A 
Thenar (4)
Hypothenar (3)
Lumbricals (4)
Palmar interossei (3)
Dorsal interossei (4)
33
Q

What is the innervation of the thenar muscles?

A

Median nerve (except adductor pollicis (Ulnar nerve))

34
Q

What is the innervation of the hypothenar muscles?

A

Ulnar nerve

35
Q

What is the innervation of the Lumbricals 1-2?

A

Median nerve

36
Q

What is the innervation of the Lumbricals 3-4?

A

Ulnar nerve

37
Q

What is the innervation of the dorsal interossei?

A

Ulnar nerve

38
Q

What is the innervation of the palmar interossei?

A

Ulnar nerve

39
Q

Ulnar nerve innervates what structures in the hand?

A

Hypothenar muscles
Lumbricals 3-4
Dorsal/palmar interossei
Adductor pollicis

40
Q

Median nerve innervates what structures in the hand?

A

Thenar muscles

Lumbricals 1-2

41
Q

What are the thenar muscles innervated by Median nerve

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis brevis

42
Q

What are the thenar muscles innervated by ulnar nerve?

A

Adductor pollicis

43
Q

What are the hypothenar muscles?

A

Flexor digiti minimi
Abductor digiti minimi
Opponens digiti minimi

44
Q

What are the functions of the interossei muscles?

A

PAD DAB
Palmar Adduct
Dorsal Abduct (the fingers)

45
Q

Where do the lumbricals originate?

A

Tendons of flexor digitorum profundus

46
Q

What is the action of the lumbricals?

A

Flex MCP joint

Extend PIP joint

47
Q

Median nerve injury presents how in the hand?

A

Inability to flex distal IP joint of index finger

Inability to flex digits 2, 3 into a fist

*MSK (25 decks)

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