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Anatomy > Lecture 11: Antebrachium and Elbow > Flashcards

Lecture 11: Antebrachium and Elbow Flashcards

1
Q

Distal attachment brachioradialis

A

Distal radius, proximal to styloid process

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2
Q

Proximal attachment pronator teres

A

Ulnar head- cornoid process of ulna

Humeral head- medial epicondyle and supracondylar ridge

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3
Q

Distal attachment extensor carpi ulnaris

A

Dorsal aspect of base of fifth metacarpal

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4
Q

Superficial muscles of posterior antebrachium

A 
Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
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5
Q

Proximal attachment extensor carpi radialis longus

A

Lateral supracondylar ridge of humerus

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6
Q

Function of flexor digitorum superficialis

A

Flexes middle phalanges of medial four fingers
Can also flex proximal phalanges at MP joints by continued action
Capable of flexing each finger independently

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7
Q

Innervation pronator teres

A

Median nerve C6-7

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8
Q

Distal attachment flexor digitorum profundus

A

Distal phalanges 2-5

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9
Q

Superficial muscles of anterior compartment include

A

Pronator teres
Flexor carpi radialis
Palmaris longus (sometimes absent)
Flexor carpi ulnaris

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10
Q

Innervation of flexor pollicus longus

A

Median nerve C8-T1

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11
Q

Brachioradialis proximal attachment

A

Proximal 2/3 of supraepicondylar ridge of humerus (lateral side)

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12
Q

Function of flexor digitorum profundus

A

Only muscle that can flex distal IP joints of the fingers

Can flex the index finger independently

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13
Q

Action of extensor carpi radialis longus

A

Extends and abducts hand at wrist

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14
Q

Deep muscles of posterior antebrachium emerge from

A

Emerge from antebrachium between extensor carpi radialis and extensor digitorum muscles

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15
Q

Innervation extensor carpi radialis longus

A

Radial nerve C6-7

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16
Q

Proximal attachment extensor carpi radialis brevis

A

Lateral epicondyle of humerus

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17
Q

Blood supply extensor carpi ulnaris

A

Radial collateral, recurrent interosseous, posterior interosseous arteries

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18
Q

Innervation of supinator

A

Deep branch of radial nerve C7-8

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19
Q

Proximal attachment supinator

A

Lateral epicondyle of humerus
Radial collateral and annular ligaments
Ulnar crest

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20
Q

Distal attachment flexor pollicus longus

A

Distal phalanx of thumb

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21
Q

Distal attachment extensor carpi radialis longus

A

Dorsal aspect of base of 2nd metacarpal

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22
Q

Common origin of muscles of posterior antebrachium

A

Lateral epicondyle of humerus

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23
Q

Common function of muscles of posterior antebrachium

A

Primarily wrist and hand extensors

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24
Q

Proximal attachment of flexor digitorum superficialis

A

Humero-ulnar head

Radial head

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25
Q

Innervation for muscles of posterior antebrachium

A

Radial nerve via the deep branch of the radial nerve or the posterior interosseous nerve

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26
Q

Blood supply extensor carpi radialis brevis

A

Radial collateral, radial recurrent, recurrent interosseous, posterior interosseous arteries

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27
Q

Common origin of the anterior compartment muscles

A

Medial epicondyle of humerus

28
Q

Common function of anterior compartment muscles

A

Wrist and digit flexion

29
Q

Proximal attachment extensor digitorum

A

Lateral epicondyle of humerus

30
Q

Function of flexor pollicus longus

A

Flexes distal phalanx of thumb

31
Q

Innervation for flexor digitorum profundus

A

Median nerve via anterior interosseous nerve and ulnar nerve C8-T1

32
Q

Innervation extensor digit minimi

A

Posterior interosseus nerve C7-8

33
Q

Distal attachment extensor digit minimi

A

Extensor expansion of 5th finger

34
Q

Distal attachment pronator quadratus

A

Distal third of radius

35
Q

Innervation of extensor digitorum

A

Posterior interosseous nerve C7-8

36
Q

Intermediate muscles of anterior compartment include

A

Flexor digitorum superficialis

37
Q

Blood supply extensor carpi radialis longus

A

Radial collateral, radial recurrent, recurrent interosseous, posterior interosseous

38
Q

Blood supply brachioradialis

A

Radial collateral artery, radial recurrent artery, radial artery

39
Q

Distal attachment pronator teres

A

Middle third of lateral surface of radius

40
Q

Blood supply extensor digitorum

A

Posterior interosseous, recurrent interosseous, perforating branch of anterior interosseous arteries

41
Q

Action of brachioradialis

A

Flexes forearm when it is pronated

42
Q

Proximal attachment of flexor digitorum profundus

A

Proximal two-thirds of anterior surface of ulna and interosseous membrane

43
Q

Action extensor carpi ulnaris

A

Extends and adducts hand at wrist

44
Q

Deep muscles of posterior antebrachium include

A 
Abdcutor pollicus longus
Extensor pollicus longus
Extensor pollicus brevis
Extensor indicis
Supinator
45
Q

Blood supply extensor digit minimi

A

Posterior interosseous, recurrent interosseous, perforating branch of anterior interosseous arteries

46
Q

Innervation extensor carpi ulnaris

A

Posterior interosseous nerve C7-8

47
Q

Innervation pronator quadratus

A

Anterior interosseous branch of median nerve C8-T1

48
Q

Innervation extensor carpi radialis brevis

A

Deep branch of radial nerve C7-8

49
Q

Proximal attachment extensor carpi ulnaris

A

Lateral epicondyle of humerus and posterior border of ulna

50
Q

Action pronator teres

A

Pronates forearm

Flexes antebrachium

51
Q

Innervation brachioradialis

A

Radial nerve C5-7

52
Q

Distal attachment supinator

A

Proximal 1/3 of radius

53
Q

Action pronator quadratus

A

Pronates forearm, helps interosseous membrane to hold ulna/radius together

54
Q

Proximal attachment pronator quadratus

A

Distal third of ulna

55
Q

Actions of extensor digitorum

A

Extends medial 4 fingers at metacarpophalangeal joints and somewhat at interphalangeal joints

56
Q

Proximal attachment extensor digiti minimi

A

Lateral epicondyle of humerus

57
Q

Distal attachment flexor digitorum superficialis

A

Shafts of middle phalanges of digits II-V

58
Q

Proximal attachment of flexor pollicus longus

A

Mid-anterior surface of radius and interosseous membrane

59
Q

Innervation of anterior compartment muscles

A

Median and ulnar nerves

60
Q

Deep muscles of anterior antebrachium

A

Flexor pollicus longus
Pronator quadratus
Ulnar head of pronator teres
Flexor digitorum profundus

61
Q

Distal attachment extensor digitorum

A

Extensor expansions of medial 4 fingers

62
Q

Action supinator

A

Supinates forearm

Brings radius back to anatomical position

63
Q

Blood supply to flexor digitorum profundus

A

Anterior interosseous artery

64
Q

Distal attachment extensor carpi radialis brevis

A

Dorsal aspect of base of 3rd metacarpal

65
Q

Actions of extensor digit minimi

A

Extends 5th finger at metacarpophalangeal joint and somewhat at interphalangeal joint

66
Q

Actions of extensor carpi radialis brevis

A

Extends and abducts hand at wrist

67
Q

Innervation of flexor digitorum superficialis

A

Median nerve C7-8, T1

Anatomy (34 decks)

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