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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
Q

Flexor Carpi Ulnaris Origin & Insertion

A

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
Q

Flexor Carpi Ulnaris Function & Innervation

A

Function:
Wrist flexion
Ulnar deviation

Innervation:
Ulnar n.

27
Q

Flexor Digitorum Superficialis Origin & Insertion

A

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
Q

Flexor Digitorum Superficialis Function & Innervation

A

Function:
Finger PIP joint flexion

Innervation:
Median n.

29
Q

Flexor Pollicis Longus Origin & Insertion

A

Origin:
Radius middle part (anterior surface); Adjacent interosseous membrane

Insertion:
Thumb distal phalanx

29
Q

Flexor Pollicis Longus Function & Innervation

A

Function:
Thumb distal phalanx flexion

Innervation:
Median n.

30
Q

Flexor Digitorum Profundus Origin & Insertion

A

Origin:
Ulna proximal 3/4 medial side; Adjacent interosseous membrane

Insertion:
4 tendons; Distal finger phalanges palmar base

31
Q

Flexor Digitorum Profundus Function & Innervation

A

Function:
Wrist flexion
Digits 2-5 DIP flexion

Innervation:
Medial half- Ulnar n.
Lateral half- Median n.

32
Q

Pronator Quadratus Origin & Insertion

A

Origin:
Distal ulna anterior surface

Insertion:
Distal radius anterior surface

33
Q

Pronator Quadratus Function & Innervation

A

Function:
Forearm pronation

Innervation:
Median n.

34
Q

Adductor Pollicis Brevis Origin & Insertion

A

Origin:
Trapezium and Scaphoid palmar tubercles

Insertion:
Thumb proximal phalanx base

35
Q

Adductor Pollicis Brevis Function & Innervation

A

Function:
Thumb MCP abduction
Thumb CMC abduction

Innervation:
Median n.

36
Q

Flexor Pollicis Brevis Origin & Insertion

A

Origin:
Trapezium transverse carpal ligg
Trapezium palmar tubercle

Insertion:
Thumb proximal phalanx radial side

37
Q

Flexor Pollicis Brevis Function & Innervation

A

Function:
Thumb flexion

Innervation:
Median n.

38
Q

Opponens Pollicis Origin & Insertion

A

Origin:
Trapezium transverse carpal ligg
Trapezium palmar tubercle

Insertion:
Thumb metacarpal shaft

39
Q

Opponens Pollicis Function & Innervation

A

Function:
Thumb opposition

Innervation:
Median n.

40
Q

Adductor Pollicis Origin & Insertion

A

Origin:
Oblique head- capitate bone; 2nd and 3rd metacarpal base
Transverse head- 3rd metacarpal palmar surface

Insertion:
Thumb proximal phalanx base ulnar side

41
Q

Adductor Pollicis Function & Innervation

A

Function:
Thumb adduction

Innervation:
Ulnar n.

42
Q

Abductor Digiti Minimi Origin & Insertion

A

Origin:
Pisiform bone; Flexor carpi ulnaris tendon

Insertion:
Digit 5/little finger proximal phalanx base

43
Q

Abductor Digiti Minimi Function & Innervation

A

Function:
Digit 5/little finger MCP joint abduction

Innervation:
Ulnar n.

44
Q

Flexor Digiti Minimi Origin & Insertion

A

Origin:
Hook of Hamate

Insertion:
Digit 5/little finger proximal phalanx base

45
Q

Flexor Digiti Minimi Function & Innervation

A

Function:
Digit 5/little finger flexion

Innervation:
Ulnar n.

46
Q

Opponens Digiti Minimi Origin & Insertion

A

Origin:
Transverse carpal ligg; Hook of hamate

Insertion:
5th metacarpal shaft

47
Q

Opponens Digiti Minimi Function & Innervation

A

Function:
5th metacarpal flexion
5th metacarpal lateral rotation (opposition)

Innervation:
Ulnar n.

48
Q

Lumbricals (Hand) Origin & Insertion

A

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
Q

Lumbricals (Hand) Function & Innervation

A

Function:
MCP joint flexion
IP joint extension

Innervation:
Medial 2- Ulnar n.
Lateral 2- Median n.

50
Q

Dorsal Interossei Origin & Insertion

A

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
Q

Dorsal Interossei Function & Innervation

A

Function:
2nd-4th digit abduction away from middle finger

Innervation:
Ulnar n.

52
Q

Palmar Interossei Origin & Insertion

A

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
Q

Palmar Interossei Function & Innervation

A

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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