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NPTE > Forearm/Hand Muscles > Flashcards

Forearm/Hand Muscles Flashcards

1
Q

Extensor Carpi Radialis Longus & Brevis Origin & Insertion

A

Origin:
Humerus lateral epicondyle
“common extensor origin”

Insertion:
ECRL- 2nd metacarpal base
ECRB- 3rd metacarpal base

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2
Q

Extensor Carpi Radialis Longus & Brevis Function & Innervation

A

Function:
Wrist extension
Radial deviation

Innervation:
Radial n.

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3
Q

Extensor Digitorum Origin & Insertion

A

Origin:
Humerus lateral epicondyle
“common extensor origin”

Insertion:
4 tendons; Extensor mechanism base; Dorsal base of proximal phalanx 2-5 digits

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4
Q

Extensor Digitorum Function & Innervation

A

Function:
MCP joint extension
IP joint extension 2-5 digits

Innervation:
Radial n.

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5
Q

Extensor Digiti Minimi Origin & Insertion

A

Origin:
Extensor digitorum (ulnar side of belly)

Insertion:
Tendon divides and joins extensor digitorum tendon (ulnar side)

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6
Q

Extensor Digiti Minimi Function & Innervation

A

Function:
MCP joint extension
IP joint digit 5 (little finger)

Innervation:
Radial n.

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7
Q

Extensor Carpi Ulnaris Origin & Insertion

A

Origin:
Humerus lateral epicondyle
“Common extensor origin”

Insertion:
5th metacarpal base

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8
Q

Extensor Carpi Ulnaris Function & Innervation

A

Function:
Wrist extension
Ulnar deviation

Innervation:
Radial n.

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9
Q

Abductor Pollicis Longus Origin & Insertion

A

Origin:
Radius and Ulna posterior surface (middle); Adjacent interosseous membrane

Insertion:
1st metacarpal base

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10
Q

Abductor Pollicis Longus Function & Innervation

A

Function:
1st digit abduction
1st digit extension at CMC joint

Innervation:
Radial n.

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11
Q

Extensor Pollicis Brevis Origin & Insertion

A

Origin:
Radius middle to distal parts (posterior surface); Adjacent interosseous membrane

Insertion:
Proximal phalanx of thumb

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12
Q

Extensor Pollicis Brevis Function & Innervation

A

Function:
1st digit extension MCP joint
1st digit extension IP joint

Innervation:
Radial n.

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13
Q

Extensor Pollicis Longus Origin & Insertion

A

Origin:
Ulna middle part (posterior surface); Adjacent interosseous membrane

Insertion:
Thumb distal phalanx

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14
Q

Extensor Pollicis Longus Function & Innervation

A

Function:
1st digit extension MCP joint
1st digit extension IP joint

Innervation:
Radial n.

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15
Q

Extensor Indicis Origin & Insertion

A

Origin:
Ulna middle to distal part (posterior surface); Adjacent interosseous membrane

Insertion:
Tendon blends w/ extensor digitorum index tendon (ulnar side)

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16
Q

Extensor Indicis Function & Innervation

A

Function:
2nd digit extension
Wrist extension

Innervation:
Radial n.

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17
Q

Supinator Origin & Insertion

A

Origin:
Humerus lateral epicondyle
“common extensor origin”

Insertion:
Proximal radius lateral surface

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18
Q

Supinator Function & Innervation

A

Function:
Forearm supination

Innervation:
Radial n.

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19
Q

Pronator Teres Origin & Insertion

A

Origin:
Humeral head- medial epicondyle
Ulnar head- medial to ulna tuberosity

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20
Q

Pronator Teres Function & Innervation

A

Function:
Forearm pronation
Elbow flexion

Innervation:
Median n.

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21
Q

Flexor Carpi Radialis Origin & Insertion

A

Origin:
Humerus medial epicondyle
“common flexor origin”

Insertion:
2nd and 3rd metacarpals

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22
Q

Flexor Carpi Radialis Function & Innervation

A

Function:
Wrist flexion
Radial deviation

Innervation:
Median n.

23
Q

Palmaris Longus Origin & Insertion

A

Origin:
Humerus medial epicondyle
“common flexor origin”

Insertion:
Carpal ligament; Palmar aponeurosis of hand

24
Q

Palmaris Longus Function & Innervation

A

Function:
Wrist flexion

Innervation:
Median n.

25
Flexor Carpi Ulnaris Origin & Insertion
Origin: Humeral head- Humerus medial epicondyle Ulnar head- Ulna middle 1/3 posterior border Insertion: Pisiform; pisohamate and pisometacarpal liggs; 5th metacarpal palmar base
26
Flexor Carpi Ulnaris Function & Innervation
Function: Wrist flexion Ulnar deviation Innervation: Ulnar n.
27
Flexor Digitorum Superficialis Origin & Insertion
Origin: Humeroulnar head- Humerus medial epicondyle; Ulna coronoid process medial side Radial head- Oblique line distal and lateral to bicipital tuberosity Insertion: 4 tendons; Middle phalange sides of fingers
28
Flexor Digitorum Superficialis Function & Innervation
Function: Finger PIP joint flexion Innervation: Median n.
29
Flexor Pollicis Longus Origin & Insertion
Origin: Radius middle part (anterior surface); Adjacent interosseous membrane Insertion: Thumb distal phalanx
29
Flexor Pollicis Longus Function & Innervation
Function: Thumb distal phalanx flexion Innervation: Median n.
30
Flexor Digitorum Profundus Origin & Insertion
Origin: Ulna proximal 3/4 medial side; Adjacent interosseous membrane Insertion: 4 tendons; Distal finger phalanges palmar base
31
Flexor Digitorum Profundus Function & Innervation
Function: Wrist flexion Digits 2-5 DIP flexion Innervation: Medial half- Ulnar n. Lateral half- Median n.
32
Pronator Quadratus Origin & Insertion
Origin: Distal ulna anterior surface Insertion: Distal radius anterior surface
33
Pronator Quadratus Function & Innervation
Function: Forearm pronation Innervation: Median n.
34
Adductor Pollicis Brevis Origin & Insertion
Origin: Trapezium and Scaphoid palmar tubercles Insertion: Thumb proximal phalanx base
35
Adductor Pollicis Brevis Function & Innervation
Function: Thumb MCP abduction Thumb CMC abduction Innervation: Median n.
36
Flexor Pollicis Brevis Origin & Insertion
Origin: Trapezium transverse carpal ligg Trapezium palmar tubercle Insertion: Thumb proximal phalanx radial side
37
Flexor Pollicis Brevis Function & Innervation
Function: Thumb flexion Innervation: Median n.
38
Opponens Pollicis Origin & Insertion
Origin: Trapezium transverse carpal ligg Trapezium palmar tubercle Insertion: Thumb metacarpal shaft
39
Opponens Pollicis Function & Innervation
Function: Thumb opposition Innervation: Median n.
40
Adductor Pollicis Origin & Insertion
Origin: Oblique head- capitate bone; 2nd and 3rd metacarpal base Transverse head- 3rd metacarpal palmar surface Insertion: Thumb proximal phalanx base ulnar side
41
Adductor Pollicis Function & Innervation
Function: Thumb adduction Innervation: Ulnar n.
42
Abductor Digiti Minimi Origin & Insertion
Origin: Pisiform bone; Flexor carpi ulnaris tendon Insertion: Digit 5/little finger proximal phalanx base
43
Abductor Digiti Minimi Function & Innervation
Function: Digit 5/little finger MCP joint abduction Innervation: Ulnar n.
44
Flexor Digiti Minimi Origin & Insertion
Origin: Hook of Hamate Insertion: Digit 5/little finger proximal phalanx base
45
Flexor Digiti Minimi Function & Innervation
Function: Digit 5/little finger flexion Innervation: Ulnar n.
46
Opponens Digiti Minimi Origin & Insertion
Origin: Transverse carpal ligg; Hook of hamate Insertion: 5th metacarpal shaft
47
Opponens Digiti Minimi Function & Innervation
Function: 5th metacarpal flexion 5th metacarpal lateral rotation (opposition) Innervation: Ulnar n.
48
Lumbricals (Hand) Origin & Insertion
Origin: 1st/2nd- Flexor profundus tendons radial surface of 1st and 2nd 3rd- Flexor profundus tendons adjacent sides of 1st and 2nd 4th- Flexor profundus tendons adjacent sides Insertion: Radial border of extensor expansion on dorsal of respective digits
49
Lumbricals (Hand) Function & Innervation
Function: MCP joint flexion IP joint extension Innervation: Medial 2- Ulnar n. Lateral 2- Median n.
50
Dorsal Interossei Origin & Insertion
Origin: 1st- Adjacent sides of 1st/2nd metacarpal 2nd- Adjacent sides of 2nd/3rd metacarpal 3rd- Adjacent sides of 3rd/4th metacarpal 4th- Adjacent sides of 4th/5th metacarpal Insertion: 1st- Index finger radial side to proximal phalanx base 2nd- Middle finger radial side 3rd- Middle finger ulnar side to extensor expansion 4th- Ring finger ulnar side
51
Dorsal Interossei Function & Innervation
Function: 2nd-4th digit abduction away from middle finger Innervation: Ulnar n.
52
Palmar Interossei Origin & Insertion
Origin: 1st- Thumb metacarpal ulnar side 2nd- Second metacarpal ulnar side 3rd- Fourth metacarpal radial side 4th- Fifth metacarpal radial side Insertion: 1st- Thumb ulnar side 2nd- Index finger ulnar side 3rd- Ring finger radial side 4th- Little finger radial side
53
Palmar Interossei Function & Innervation
Function: 2nd, 4th, 5th digit adduction towards middle finger MCP joint digit flexion IP joint extension Innervation: Ulnar n.

NPTE (7 decks)

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