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ANAT 392 - Len > Hand > Flashcards

Hand Flashcards

1
Q

What nerve supplies the lateral 2/3 of the palmar aspect of the hand?

A

median nerve

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2
Q

What nerve supplies the dorsal aspect of the lateral 2/3 of the hand?

A

radial nerve

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3
Q

What nerve supplies the medial 1/3 of the hand?

A

ulnar nerve

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4
Q

What attaches to the apex of the palmar aponeurosis?

A

palmaris longus

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5
Q

What do the longitudinal fibers of the palmar apoenurosis blend with?

A

fibrous tissue in fingers

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6
Q

The fibrous tissue in the fingers supper ______ tendons, along with the synovial sheath.

A

flexor

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7
Q

What are the borders of the fibro-osseous tunnel in the fingers? What is contained within the tunnel?

A 
Roof = fibrous tissue
Floor = bone 
Contains = flexor tendons
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8
Q

What are the 3 regions of the hand

A
  1. Thenar
  2. Hypothenar
  3. Central
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9
Q

What muscles are within the thenar region?

A
  1. Flexor pollicis brevis
  2. Abductor pollicis brevis
  3. Opponens pollicis
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10
Q

What muscles are within the hypothenar region?

A
  1. Abductor digiti minimi
  2. Palmaris brevis
  3. Opponens digiti minimi
  4. Flexor digiti minimi
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11
Q

What muscles are in the central region?

A
  1. Adductor pollicis
  2. Palmar interosseous
  3. Dorsal interosseous
  4. Lumbricals
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12
Q

What is the axis of abduction and adduction in the hand?

A

The 3rd phalange

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13
Q

How many intrinsic muscles of the hand are there?

A

19

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14
Q

How many muscles in the hand are innervated by deep ulnar nerve?

A

13 1/2

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15
Q

How many muscles in the hand are innervated by the superficial ulnar nerve?

A

1 (if present)

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16
Q

How many muscles the hand are innervated by median nerve?

A

4 1/2

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17
Q

The synovial sheath surrounding the long flexor tendons are continuous with the synovial sheath covering the carpal region in what two phalanges?

A

1st and 5th

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18
Q

How many tendons are present in the carpal tunnel?

A

9

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19
Q

What are the 3 most common causes of CTS?

A
  1. Overuse of flexor tendons
  2. Penetrating wound to these tendons
  3. Pregnancy
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20
Q

What are the sensory signs and symptoms of CTS?

A

-numbness in lateral 3 1/2 fingers

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21
Q

What movements o the fingers and thumb will be effected in CTS?

A
  1. Opposition will not be present
  2. Flexion of thumb (slightly)
  3. Abduction of thumb (slightly)
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22
Q

Numbness in the palm of the hand and the fingers is a sign of CTS (T/F).

A

FALSE (NOT PALM)

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23
Q

A ______ palmar digital nerve is shared by 2 surfaces of fingers, whereas a _______ palmar digital nerve supplies one side of a finger.

A

common; proper

24
Q

Where is the tunnel of guyon located, and what does it contain ?

A

just lateral to pisiform; contains ulnar nerve and artery

25
Q

What is the superficial palmar arch formed by?

A

Superficial palmar branch of radial and superficial palmar branch of ulnar.

26
Q

In ___% of the population the superficial palmar branch of radial is not present so the arch is just formed by the ulnar part.

A

30

27
Q

What is the level of the superficial palmar arch?

A

Horizontal line parallel to thumb in full extension

28
Q

What are the names the branches coming off the superficial palmar arch?

A

Common palmar digital

29
Q

What are the names of the branches coming off the deep palmar arch?

A

palmar metacarpal aa.

30
Q

The wrist is a _____ because it is comprised of many joints.

A

complex

31
Q

Does ulnar or radial deviation have a larger range?

A

ulnar

32
Q

The range of flexion and extension is about equal at the wrist (T/F).

A

TRUE

33
Q

The _____-______ joint is between the radial distal end and the proximal row of carpal bones.

A

radio-carpal

34
Q

What type of joint is the radio-carpal joint?

A

condylar

35
Q

What type of axes does the radio-carpal joint have?

A
  1. antero-posterior

2. transverse

36
Q

Where does the anterior-posteiror axis of the wrist pass?

A

capitate

37
Q

Where does the transverse axis of the wrist pass?

A

styloid process of radius and pisiform

38
Q

The ___-____ joint is between the proximal and distal row of carpal bones.

A

mid-carpal

39
Q

What types of joints are the mid-carpal and the inter carpal joints?

A

gliding

40
Q

What are the attachments of the lateral collateral ligament?

A

styloid process of radius and scaphoid bone

41
Q

What are the attachments of the medial collateral ligaments?

A

styloid process of ulna and pisiform and triquetrum

42
Q

Name an attachment of the radoiocarpal ligament.

A

pisiform

43
Q

What movements are checked by the collateral ligaments?

A

Ulnar and radial deviation

44
Q

What movements do the radio-carpal and ulno-carpal ligaments check?

A

check flexion and extension

45
Q

The anterior and posterior inferior radial ulnar ligaments directly support the wrist complex (T/F),.

A

FALSE

46
Q

The ______ ligaments connect carpal bones in the same row.

A

interosseous

47
Q

The ___-____ ligaments stretch from proximal to the distal carpal rows.

A

mid-carpal

48
Q

During flexion, the ROM is ___ degrees at the radio-carpal joint and ___ degrees at the midcarpal joint.

A

50; 35

49
Q

During extension, the ROM is ___ degrees at the radio-carpal joint and ___ degrees at the mid-carpal joint.

A

35; 50

50
Q

Carpo-metacarpal joints are ______ joints.

A

planar

51
Q

What are the CMC joints supported by?

A
  1. inter-metacarpal ligaments

2. CMC ligaments

52
Q

MCP joints are ______ joints.

A

condyloid

53
Q

What are MCP joints supported by?

A
  1. deep transverse metacarpal ligaments
  2. palmar plates
  3. collateral ligaments
54
Q

Interphalangeal joints are ____ joints.

A

hinge

55
Q

What are IP joints supported by ?

A
  1. Collateral ligaments

2. Smaller palmar plates

ANAT 392 - Len (25 decks)

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