ANAT 392 - Len > Hand > Flashcards

Hand Flashcards

(55 cards)

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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.

Study These Flashcards
A

common; proper

24
Q

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

Study These Flashcards
A

just lateral to pisiform; contains ulnar nerve and artery

25
What is the superficial palmar arch formed by?
Superficial palmar branch of radial and superficial palmar branch of ulnar.
26
In ___% of the population the superficial palmar branch of radial is not present so the arch is just formed by the ulnar part.
30
27
What is the level of the superficial palmar arch?
Horizontal line parallel to thumb in full extension
28
What are the names the branches coming off the superficial palmar arch?
Common palmar digital
29
What are the names of the branches coming off the deep palmar arch?
palmar metacarpal aa.
30
The wrist is a _____ because it is comprised of many joints.
complex
31
Does ulnar or radial deviation have a larger range?
ulnar
32
The range of flexion and extension is about equal at the wrist (T/F).
TRUE
33
The _____-______ joint is between the radial distal end and the proximal row of carpal bones.
radio-carpal
34
What type of joint is the radio-carpal joint?
condylar
35
What type of axes does the radio-carpal joint have?
1. antero-posterior | 2. transverse
36
Where does the anterior-posteiror axis of the wrist pass?
capitate
37
Where does the transverse axis of the wrist pass?
styloid process of radius and pisiform
38
The ___-____ joint is between the proximal and distal row of carpal bones.
mid-carpal
39
What types of joints are the mid-carpal and the inter carpal joints?
gliding
40
What are the attachments of the lateral collateral ligament?
styloid process of radius and scaphoid bone
41
What are the attachments of the medial collateral ligaments?
styloid process of ulna and pisiform and triquetrum
42
Name an attachment of the radoiocarpal ligament.
pisiform
43
What movements are checked by the collateral ligaments?
Ulnar and radial deviation
44
What movements do the radio-carpal and ulno-carpal ligaments check?
check flexion and extension
45
The anterior and posterior inferior radial ulnar ligaments directly support the wrist complex (T/F),.
FALSE
46
The ______ ligaments connect carpal bones in the same row.
interosseous
47
The ___-____ ligaments stretch from proximal to the distal carpal rows.
mid-carpal
48
During flexion, the ROM is ___ degrees at the radio-carpal joint and ___ degrees at the midcarpal joint.
50; 35
49
During extension, the ROM is ___ degrees at the radio-carpal joint and ___ degrees at the mid-carpal joint.
35; 50
50
Carpo-metacarpal joints are ______ joints.
planar
51
What are the CMC joints supported by?
1. inter-metacarpal ligaments | 2. CMC ligaments
52
MCP joints are ______ joints.
condyloid
53
What are MCP joints supported by?
1. deep transverse metacarpal ligaments 2. palmar plates 3. collateral ligaments
54
Interphalangeal joints are ____ joints.
hinge
55
What are IP joints supported by ?
1. Collateral ligaments | 2. Smaller palmar plates
ANAT 392 - Len
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