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Upper Extremity Function > Wrist/Hand Musculature > Flashcards

Wrist/Hand Musculature Flashcards

(72 cards)

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1
Q

What is the origin of the Extensor Digitorum?

A

Lateral Epicondyle

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2
Q

What is the insertion of the Extensor Digitorum?

A

Base of middle and distal phalanx 2-5

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3
Q

What is the action of the Extensor Digitorum?

A

Extends MCP and IP joints

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4
Q

What is the innervation of the Extensor Digitorum?

A

Radial Nerve C6-8

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5
Q

What is the origin of the Flexor Digitorum Profundus?

A

Anterior medial proximal 3/4 of Ulna

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6
Q

What is the Insertion of the Flexor Digitorum Profundus?

A

Base of anterior distal phlanges 1-4

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7
Q

What is the action of the Flexor Digitorum Profundus?

A

Flexes distal IP 2-5, assist with flex PIP and MCP

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8
Q

What is the innervation of the Flexor Digitorum Profundus?

A

I/II Median C8-T1

III/IV Ulnar C8-T1

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9
Q

What is the origin of the Adductor Pollicis?

A

Capitate, base of 2/3 metacarpals, palmer surface of 3rd metacarpal

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10
Q

What is the insertion of the Adductor Pollicis?

A

Ulnar side base proximal phalanx of the thumb, extensor expansion

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11
Q

What is the action of the Adductor Pollicis?

A

Adducts the CMC, assists with flexion

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12
Q

What is the innervation of the Adductor Pollicis?

A

Ulnar C8-T1

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13
Q

What is the origin of the Abductor Pollicis Brevis?

A

Flex Retinaculum, tubercle of trapezium, tubercle of scaphoid

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14
Q

What is the insertion of the Abductor Pollicis Brevis?

A

Base of Proximal Phalanx of thumb (radial side), extensor expansion

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15
Q

What is the Action of the Abductor Pollicis Brevis?

A

Abducts 1st CMC, extends IP

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16
Q

What is the Innervation of the Abductor Pollicis Brevis?

A

Median C6-T1

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17
Q

What is the Origin of the Opponens Pollicis?

A

Tubercle of trapezium, flex retinaculum

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18
Q

What is the Insertion of the Opponens Pollicis?

A

length of 1st metacarpal (Radial side)

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19
Q

What is the Action of the Opponens Pollicis?

A

Opposes CMC

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20
Q

What is the Innervation of the Opponens Pollicis?

A

Median C6-T1

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21
Q

What is the Origin of the Flexor Pollicis Longus?

A

Anterior surface middle radius, interosseus membrane, medial epicondyle

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22
Q

What is the Insertion of the Flexor Pollicis Longus?

A

Base distal 1st Phalanx (Palmer surface)

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23
Q

What is the Action of the Flexor Pollicis Longus?

A

Flex IP of thumb, assist flex of MCP and CMC

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24
Q

What is the Innervation of the Flexor Pollicis Longus?

A

Median C8-T1

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25
What is the Origin of the Flexor Pollicis Brevis?
Flex Retinaculum, trapezium, trapezoid, capitate
26
What is the Insertion of the Flexor Pollicis Brevis?
base of proximal Phalanx (Radial side)
27
What is the Action of the Flexor Pollicis Brevis?
Flexes MCP and CMC, assists in Opposition
28
What is the Innervation of the Flexor Pollicis Brevis?
Median C6-T1
29
What is the Origin of the Extensor Pollicis Longus?
Middle 1/3 posterior surface Ulna
30
What is the Insertion of the Extensor Pollicis Longus?
Base of distal phalanx of thumb, (Dorsal surface)
31
What is the Action of the Extensor Pollicis Longus?
Extends IP, assists with MCP and CMC extension of thumb
32
What is the Innervation of the Extensor Pollicis Longus?
Radial C7-8
33
What is the Origin of the Extensor Pollicis Brevis?
Posterior surface distal radius
34
What is the Insertion of the Extensor Pollicis Brevis?
Base Prox. Phalanx
35
What is the Action of the Extensor Pollicis Brevis?
Extends MCP, Ext and ABD CMP, Assists RD (Radial Deviation)
36
What is the Innervation of the Extensor Pollicis Brevis?
Radial C7-8
37
What is the Origin of the Abductor Pollicis Longus?
Post surface body distal ulna, 1/3 body of radius
38
What is the Insertion of the Abductor Pollicis Longus?
Base of 1st Metacarpal (Radial side)
39
What is the Action of the Abductor Pollicis Longus?
ABD and Ext CMC, assists wrist flex and ABD/RD
40
What is the Innervation of the Abductor Pollicis Longus?
Radial C7-8
41
What is the Origin of the Opponens Digiti Minimi?
Hook of hamate, flex retinaculum
42
What is the Insertion of the Opponens Digiti Minimi?
Length of 5th metacarpal, (Ulnar side)
43
What is the Action of the Opponens Digiti Minimi?
Opposes 5th CMC
44
What is the Innervation of the Opponens Digiti Minimi?
Ulnar C8-T1
45
What is the Origin of the Abductor Digiti Minimi?
Pisiform, Tendon of flex carpi ulnaris
46
What is the Insertion of the Abductor Digiti Minimi?
Ulnar side base of prox phalanx 5th finger, ulnar boarder extensor expansion
47
What is the Action of the Abductor Digiti Minimi?
Abducts, assist opposition of 5th MCP
48
What is the Innervation of the Abductor Digiti Minimi?
Ulnar C8-T1
49
What is the Origin Flexor Digiti Minimi?
Hook of hamate, Flex retinaculum
50
What is the Insertion Flexor Digiti Minimi?
Base of prox phalanx little finger (Ulnar side)
51
What is the Action Flexor Digiti Minimi?
Flexes MCP of little finger
52
What is the Innervation Flexor Digiti Minimi?
Ulnar C8-T1
53
What is the Origin of the Dorsal Interossei?
Sides of digits 1-5
54
What is the Insertion of the Dorsal Interossei?
Base of prox. phalanx, extensor expansion
55
What is the Action of the Dorsal Interossei?
Abducts 2-4, Add Thumb
56
What is the Innervation of the Dorsal Interossei?
Ulnar C8-T1
57
What is the Origin of the Palmer Interossei?
Base of 1st MC ulnar side, length 2-5 MC
58
What is the Insertion of the Palmer Interossei?
Extensor expansion of same digit
59
What is the Action of the Palmer Interossei?
Adduct fingers 1,2,4,5 (all except 3)
60
What is the Innervation of the Palmer Interossei?
Ulnar C8-T1
61
What is the Origin of the Lumbricales?
Sides of 2-5, flex profundus tendons
62
What is the Insertion of the Lumbricales?
Radial boarder extensor expansion 2-5?
63
What is the Action of the Lumbricales?
Extends IP 2-5, Flex MCP 2-5
64
What is the Innervation of the Lumbricales?
Median C8-T1 | Ulnar C8-T1
65
What is the Origin of the Extensor Indicis?
Post Surface body distal Ulna
66
What is the Insertion of the Extensor Indicis?
Extension expansion index finger
67
What is the Action of the Extensor Indicis?
Ext MCP and IP index finger
68
What is the Innervation of the Extensor Indicis?
Radial C7-8
69
What is the Origin of the Extensor Digiti Minimi?
Lateral Epicondyle
70
What is the Insertion of the Extensor Digiti Minimi?
Extensor expansion of 5th digit
71
What is the Action of the Extensor Digiti Minimi?
Extends MCP and IP of the 5th digit
72
What is the Innervation of the Extensor Digiti Minimi?
Radial C7-8

Upper Extremity Function (2 decks)

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