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Fall 2014: Anatomy & Kinesiology > Week 8: Hand > Flashcards

Week 8: Hand Flashcards

1
Q

Actions (3) of ED?

A
  1. Extend finger 2-5 @ MCP
  2. Extend hand at wrist
  3. Extend PIP and DIP
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2
Q

Origin of ED?

A

lateral epicondyle of the humerus

via the common extensor tendon

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3
Q

Insertions (2) of ED?

A
  1. Base of each phalynx of digits 2-5

2. Dorsal expansion of 2-5

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4
Q

Innervation of ED?

A

Posterior interosseous N. (Part of Radial N.)

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5
Q

Actions (2) of EDM?

A
  1. Extends little finger at MCP, PIP an DIP

2. Extends hand at the wrist

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6
Q

Origin of EDM?

A

Lateral epicondyle of the humerus

via the common extensor tendon

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7
Q

Insertions (2) of EDM?

A
  1. Base of proximal phalynx of digit 5

2. Dorsal expansion of digit 5

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8
Q

Innervation of EDM?

A

Posterior interosseous N. (Part of Radial N.)

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9
Q

Actions (2) of APL?

A
  1. Abducts the thumb @ CMC

2. Extends thumb @ CMC

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10
Q

Origins (2) of APL?

A

Posterior ulna and radius

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11
Q

Insertion of APL?

A

1st metacarpal

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12
Q

Innervation of APL?

A

Posterior interosseous N. (Part of Radial N.)

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13
Q

Actions (2) of EPB?

A
  1. Extends the thumb @ the CMC & MCP

2. Abducts the thumb @ CMC

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14
Q

Origins (2) of EPB?

A
  1. Posterior radius

2. Interosseous membrane

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15
Q

Insertion of EPB?

A

base of the 1st proximal phalynx

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16
Q

Innervation of EPB?

A

Posterior interosseous N. (Part of Radial N.)

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17
Q

Action (1) of EPL?

A

Extends thumb @ CMC, MCP and IP joints

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18
Q

Origin (2) of EPL?

A
  1. Middle posterior 1/3 of ulna

2. Interosseous membrane

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19
Q

Insertion of EPL?

A

Base of 1st distal phalynx

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20
Q

Innervation of EPL?

A

Posterior interosseous N. (Part of Radial N.)

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21
Q

Action (1) of EI?

A

Extend 2nd phalange @ MCP, PIP, and DIP

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22
Q

Origin (2) of EI?

A
  1. Proximal part of the lower 1/3 of the ulna

2. interosseous membrane

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23
Q

insertions (2) of EI?

A
  1. Base of proximal phalynx on 2nd digit

2. Dorsal expansion of digit 2

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24
Q

Innervation of EI?

A

Posterior interosseous N. (Part of Radial N.)

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25
Actions (2) of FDS?
1. Flexes fingers 2-5 @ MCP and PIP 2. Flexes the hand at the wrist joint
26
Origin (3) of FDS?
1. Medial epicondyle of humerus via common flexor tendon 2. Coronoid process of the ulna 3. Oblique line of the radius
27
Insertion of FDS?
Medial and lateral aspects of the middle phalynx of digits 2-5
28
Innervation of FDS?
Median N.
29
Actions (3) of FDP?
1. Flexes fingers 2-5 @ DIP 2. Assists with flexion @ PIP and MCP 3. Flex hand @ wrist
30
Origins (2) of FDP?
1. Proximal 2/3 of anterior surface of ulna | 2. Interosseous membrane
31
Insertion of FDP?
Base of distal phalanx of digits 2-5
32
Innervation of FDP?
Median branch → Ulnar N. to medial FDP (3 and 4) | Radial branch → Median N. to lateral FDP (2 and 3)
33
Actions (2) of FPL?
1. Flex thumb @ CMC, MCP, and IP | 2. Flex hand @ wrist
34
Origins (3) of FPL?
Anterior surface of radius, ulna, and medial epicondyle
35
Insertion of FPL?
Distal phalanx of thumb
36
Innervation of FPL?
Anterior Interosseous N.
37
Action of APB?
Abduct thumb @ CMC
38
Origin (3) of APB?
1. Flexor retinaculum 2. Scaphoid 3. Trapezium
39
Insertion of APB?
Base of 1st PP, lateral aspect
40
Innervation of APB?
Median N.
41
Action of FPB?
Flex thumb @ CMC and MCP
42
Origin (2) of FPB
1. Flexor retinaculum | 2. Trapezium
43
Insertion of FPB?
Base of 1st PP, lateral aspect
44
Innervation of FPB?
Median N.
45
Action of OP?
oppose thumb @ CMC
46
Origins (2) of OP?
1. Flexor retinaculum | 2. Trapezium
47
Insertion of OP?
Lateral aspect of 1st metacarpal
48
Innervation of OP?
Median N.
49
Origin of ADM?
abduct 5th phalange @ MCP
50
Origin of ADM?
pisiform
51
Insertion of ADM?
medial aspect of 5th PP
52
Innervation of ADM?
Ulnar N.
53
Action of FDM?
Flex 5th phalange @ MCP
54
Origins (2) of FDM?
1. Flexor retinuaculum | 2. Hamate
55
Insertion of FDM?
Medial aspect of 5th phalanx
56
Innervation of FDM?
Ulnar N
57
Action of ODM?
opposes 5th phalange @ CMC1
58
Origin (2) of ODM?
1. Flexor retinuaculum | 2. Hamate
59
Insertion of ODM?
Medial border of 5th metacarpal
60
Innervation of ODM?
Ulnar N.
61
Which digits are used for dexterity and fine motor?
1 and 2
62
Which digits are used for more strength and gross motor
3, 4, 5
63
The base of the thumb attaches to which carpal bone?
trapezium
64
which CMC joints allow for movement
4 and 5
65
what kind of joint is the thumb?
saddle
66
3 movements of the thumb joint
abduction/adduction flexion/extension opposition/reposition
67
What two things meet at the MCP joint
head of the metacarpal and the proximal phalanx
68
movements of the MCP joint
abduction/adduction | flexion/extension
69
How is the MCP joint supported?
medial and lateral collateral ligaments
70
What is the ligaments called that hold the volar plate of the MCP joints together with the nearby metacarpal
Deep Transverse Metacarpal Ligaments
71
What do the extrinsic muscles of the hand move? Why?
Wrist | they originate on the humerus or FA and attach at the hand
72
Functions (2) of the extrinsic muscles of the hand?
strength | gross motor
73
Primary finger extensor muscle?
extensor digitorum

Fall 2014: Anatomy & Kinesiology (12 decks)

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