24: UE Myology: Antebrachium Flashcards

1
Q

Pronator teres O and I (two heads)

A

Humeral head O: medial humeral epicondyle
Ulnar head O: coronoid process of ulna
I: lateral radius

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2
Q

Pronator teres A

A

Pronate, flex forearm

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3
Q

Innervation for superficial layer of flexors

A

Medial N for all except flexor carpi ulnaris (ulnar N)

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4
Q

Flexor carpi radialis O and I

A

O: medial humeral epicondyle
I: base of 2nd metacarpal

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5
Q

Flexor carpi radialis A

A

Flex forearm, flex and abduct hand at wrist

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6
Q

Palmaris longus O and I

A

O: medial humeral epicondyle
I: palmar aponeurosis, flexor retinaculum

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7
Q

Palmaris longus A

A

Flex forearm, flex hand, tense palmar aponeurosis

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8
Q

Flexor carpi ulnaris O and I (two heads)

A

Humeral head O: medial humeral epicondyle
Ulnar head O: olecranon, posterior ulna
I: pisiform, hook of hamate, base of 5th metacarpal

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9
Q

Flexor carpi ulnaris A

A

Flex forearm, flex and adduct hand at wrist

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10
Q

Flexor digitorum superficialis O and I (two heads)

A

Humeroulnar head O: medial humeral epicondyle, coronoid of ulna
Radial head: superoanterior radius
I: bifed insertion on intermediate phalanges 2-5

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11
Q

Flexor digitorum superficialis A

A

Flex forearm, flex hand at wrist, flex phalanges 2-5 at MP and PIP joints

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12
Q

Flexor digitorum superficialis N

A

Median N

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13
Q

Flexor digitorum profundus O and I

A

O: proximal ulna, interosseous membrane
I: distal phalanges 2-5

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14
Q

Flexor digitorum profundus A

A

Flex hand at wrist, flex phalanges 2-5 at MP, PIP, and DIP joints

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15
Q

Innnervation for deep layer of flexors (with one exception)

A

All innervated by anterior interosseous N, but medial part of flexor digitorum profundus also innervated by Ulnar N

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16
Q

Flexor pollicis longus O and I

A

O: anterior radius, interosseous membrane
I: distal phalanx of pollux

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17
Q

Flexor pollicis longus A

A

Flex hand, flex and abduct 1st phalange

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18
Q

Pronator quadratus O and I

A

O: anterior distal ulna
I: anterior distal radius

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19
Q

Pronator quadratus A

A

Pronate forearm, hold radius and ulna together

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20
Q

Three nerves that innervate the superfiial layer of extensors

A

Radial N, deep radial N, posterior interosseous N

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21
Q

Brachioradialis O and I

A

O: lateral humeral supracondylar ridge
I: lateral distal radius

22
Q

Brachioradialis A

A

Flex forearm

23
Q

Brachioradialis N

A

Radial N

24
Q

Extensor carpi radialis longus O and I

A

O; lateral humeral supracondylar ridge

I: 2nd metacarpal

25
Q

Extensor carpi radialis longus A

A

Extend, abduct hand at wrist

26
Q

Extensor carpi radialis longus N

A

Radial N

27
Q

Extensor carpi radialis brevis O and I

A

O: lateral humeral epicondyle
I: base of 3rd metacarpal

28
Q

Extensor carpi radialis brevis A

A

Extend, abduct hand at wrist

29
Q

Extensor carpi radialis brevis N

A

Deep radial N

30
Q

Extensor digitorum O and I

A

O: lateral humeral epicondyle
I: extensor expansion of digits 2-5

31
Q

Extensor digitorum A

A

Extend hand at wrist, extend all phalanges 2-5 at all joints

32
Q

Extensor digitorum N

A

Posterior interosseous N

33
Q

Extensor digiti minimi O and I

A

O: lateral humeral epicondyle
I: extensor expansion digit 5

34
Q

Extensor digit minimi A

A

Extend all joints of digit 5

35
Q

Extensor digiti minimi N

A

Posterior interosseous N

36
Q

Extensor carpi ulnaris O and I

A

O: lateral humeral epicondyle
I: 5th metacarpal

37
Q

Extensor carpi ulnaris A

A

Extend and adduct hand at wrist

38
Q

Extensor carpi ulnaris N

A

Posterior interosseous N

39
Q

Lateral and medial epicondylitis: other names

A

Lateral: tennis elbow
Medial: golfer’s elbow

40
Q

What causes lateral epicondylitis

A

Repetitive use of superficial extensors of the antebrachium OR repeated flexion and extension of the wrist -> either way, strain on the lateral humeral epicondyle

41
Q

Supinator O and I

A

O; lateral humeral epicondyle, radial collateral L, annular L, supinator crest of ulna
I: proximal radius

42
Q

Supinator N

A

Deep radial N

43
Q

Extensor Indicis O and I

A

O: posterior distal ulna, interosseous membrane

I; extensor expansion of 2nd phalanx

44
Q

Extensor indicis A

A

Extend hand at wrist, extend 2nd digit

45
Q

Extensor indicis N

A

Posterior interosseous N

46
Q

Abductor pollicis longus O and I

A

O: posterior proximal ulna, radius, interosseous membrane
I: 1st metacarpal

47
Q

Abductor pollicis longus A

A

Abduct hand at wrist, abduct Pollux

48
Q

Innervation to outcropping muscles of the deep layer of extensors

A

Posterior interosseous N

49
Q

Extensor pollicis longus O and I

A

O: posterior ulna, interosseous membrane
I: dorsal distal phalanx of Pollux

50
Q

Extensor pollicis longus A

A

Abduct hand at wrist, extend all phalanges of 1st digit

51
Q

Extensor pollicis brevis O and I

A

O: posterior radius, interosseous membrane
I: proximal phalanx of pollux

52
Q

Extensor pollicis brevis A

A

Abduct hand, extend 1st digit