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Appendicular anatomy > Muscles of the forearm- anterior and posterior compartment > Flashcards

Muscles of the forearm- anterior and posterior compartment Flashcards

1
Q

Anterior compartment muscles- superficial group (5)

A

pronator teres, flexor capri radialis, palmares longus, flexor digitorum superficialis, flexor capri ulnaris

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2
Q

anterior compartment muscles- deep group

A

flexor digitorum profundas, flexor pollicis longus, pronator quadratus

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3
Q

movements of radio ulnar joint

A

pronation- pronator teres and quadratus, brachioradialis

supination- supinator, bicep brachii, brachioradialis

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4
Q

movements of wrist- radoiocarpal and midcarpal joint- flexion and extension

A

flexion- flexor capri radialis, FCU

extension- ECRL, EXRB, and ECU

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5
Q

movements of wrist- radoiocarpal and midcarpal joint- radial deviation and ulna deviation

A

radial deviation- FCR, ECRDL, ECRB

ulna deviation- FCU, ECU

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6
Q

Superficial flexors- lateral to medial

A

pronator teres, FCR, palmaris longus, FDS, FCU

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7
Q

Flexor capri radialis- origin and insertion

A

origin- medial epicondyle of humerus (CFT) to palmer surface of base of MC 2 and 3

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8
Q

Flexor capri radialis- nerve supply and action

A

median nerve C7, 8

Action- flexion and abduction

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9
Q

palmaris longus- origin and insertion

A

Medial epicondyle of humerus, to flexor retianculum and plantar aponeurosis

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10
Q

palmaris longus- nerve supply and action

A

median nerve C7, 8 and weak wrist flexion and tighten palmer fascia

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11
Q

flexor capri ulnaris- origin and insertion

A

origin- medial epicondyle of humerus, insertion pisiform and hook of hamate and base of MC 5

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12
Q

flexor capri ulnaris- nerve supply and action

A

ulna nerve C7,8

flexion and adduction at wrist joint, synergist action in abduction of digit 5

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13
Q

movement of the digits

A

flexion of fingers- FDS and FDP

flexion at thumb- flexor pollicis longus

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14
Q

flexor digitorum superficialis- origin and insertions

A

origin- medial epicondyle of humerus and coronoid process of ulna, and proximal anterior border of radius
insertion- attach by 4 tendons to either side palmer surface of muscle phalanx of each finger

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15
Q

flexor digitorum superficialis- nerve supply and action

A

median nerve C7,8

flexion at wrist, MTP, PIP

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16
Q

deep flexor- from lateral to medial (3)

A

flexor pollicis longus, flexor digitorum profundus, pronator quadratus

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17
Q

flexor digitorum profundas- origin and insertion

A

origin- medial side of coronoid process, anterior and medial surface of ulna and IM
insertion- attach by 4 tendons- base of palmer surface pf distal phalanx of each finger

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18
Q

flexor digitorum profundas- NS and action

A

NS- anterior interosseous nerve C7,8, T1-2 (radial digits) and ulna nerve C8, T1 (ulna digits)
flexion at DIP, PIP, MCP and wrist joint

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19
Q

flexor pollicis longus origin and insertion

A

origin- anterior surface of radius and IM, insertion- palmer surface of distal phalanx of thumb

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20
Q

flexor pollicis longus- NS and action

A

anterior interosseous nerve C8, T1

action- flexion at CMC, MCP and IP joint of thumb

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21
Q

what is the carpal tunnel (and 4 anchor points)

A

a tough band of fibrous CT- 4 anchor points- high points of proximal (scaphoid and pisiform) and distal carpal bones (tubercle of trapezium and hook of hamate

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22
Q

floor of carpal tunnel

A

square of tough fibrous tissue which gives roof to carpal tunnel

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23
Q

contents of carpal tunnel

A

9 tendons- 4 of FDS, 4 of FDP, FPL, median nerve

24
Q

posterior compartment superficial group (6)

A

brachioradialis, ECRL, ECRB, ED, EDM, ECU

25
Q

posterior compartment deep group (5)

A

supinator, abductor pollicis longus, EPL, EPB, Extensor indices

26
Q

superficial group posterior compartment- lateral to medial

A

brachioradialis, ECRL, ECRB, ED, EDM, ECU

27
Q

ECRL- Origin and insertion

A

from- lateral supracondylar ridge of humerus

insertion- posterior surface base of MC 2

28
Q

ECRL- NS and action

A

NS- median nerve C7,8

Action- extension and abduction

29
Q

ECRB- origin and insertion

A

Origin- lateral epicondyle of humerus

insertion- posterior surface base of MC 3

30
Q

ECRB- NS and action

A

NS- posterior interosseous nerve C6,7

Action- extension and abduction

31
Q

Extensor capri ulnaris- origin and insertion

A

lateral epicondyle of humerus- by shared aponeurosis from posterior border of ulna
to- medial side of base of MC 5

32
Q

Extensor capri ulnaris- NS and action

A

NS- posterior interosseous nerve C7,8

action- extension and adduction of hand at wrist

33
Q

extension of digits

A

extension of fingers- ED, EDM, EI
Extension of thumb- EPL/B
Abduction- APL

34
Q

extensor digitorum- origin and insertion

A

origin- lateral epicondyle of humerus

insertion- attach by 4 tendons- base of middle and distal phalanges of each finger (DDE)

35
Q

extensor digitorum- NS and action

A

NS- posterior interosseous nerve C7,8

Action- extension of MCP and IP joint

36
Q

dorsal digital expansion

A

tendon of ED divides into 2 lateral slips which terminate in base of distal phalanx, central slip through tunnel to middle phalanx

37
Q

extensor digiti minimi- origin and insertion

A

origin- lateral epicondyle of humerus, insertion- dorsal digital expansion of digit 5

38
Q

extensor digit minimi- NS and action

A

NS- posterior interosseous nerve C7,8

action- extension at MCP joint of little finger and extension of IP joints

39
Q

deep extensors- posterior compartment- lateral to medial

A

supinator, APL, EPL, EPB, EI

40
Q

extensor indices- origin and insertions

A

origin- posterior surface of the distal ulna and interosseous membrane
insertion- DDE of index finger

41
Q

extensor indices- NS and action

A

NS- posterior interosseous nerve C6,7

action- extension of IP and MCP joints of index finger

42
Q

Extensor pollicis longus- Origin and insertion

A

posterior surface of middle third of ulna and interosseous membrane
to dorsal surface of base of distal phalanx of thumb

43
Q

Extensor pollicis longus- NS and actions

A

posterior interosseous nerve C6,7

Action- extension at IP joint, assist extension at MCP, CMC and wrist joint

44
Q

extensor pollicis brevis- origin and insertions

A

origin- posterior aspect of ulna and IM

to- dorsal surface of base of proximal phalanx of thumb

45
Q

extensor pollicis brevis- NS and action

A

NS- posterior interosseous nerve C7,8

Action- extension of MCP and CMC joints of thumb

46
Q

abductor pollicis longus- origin and insertion

A

origin- posterior surface of upper ulna and middle radius and IM
to radial side of base of MC 1

47
Q

abductor pollicis longus- NS and action

A

NS- posterior interosseous nerve C7,8

Action- assist extension and abduction at 1st CMC joint, assist abduction at wrist

48
Q

flexion at wrist

A

FCU, FCR, FDS, PL, FDP, FPL

49
Q

Extension at wrist

A

ECRL, ECRB, ECU, extensor digitorum, EDM, EPL, EI, EPB

50
Q

radial deviation

A

FCR, ECRL, ECRB, APL, EPB

51
Q

Ulna deviation

A

FCU, ECU

52
Q

Ulna nerve- 2

A

FCU, medial half of flexor digitorum profundas

53
Q

median nerve- 4

A

Pronator teres, FCR, PL, FDS

54
Q

anterior intreosseous nerve

A

lateral half of flexor digitorum profundas

55
Q

radial nerve- 2

A

brachioradialis, ECRL

56
Q

posterior interosseous nerve

A

ECRB, ECU, ED, EDM, EI, EPL, EPB, APL

Appendicular anatomy (20 decks)

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