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Forearms Flashcards

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0
Q

Brachioradialis- distal attachment

A

Lateral surface of distal end of radius proximal of styled process

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1
Q

Brachioradialis- origin

A

Proximal two thirds of lateral supraepicondylar ridge of humerus

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2
Q

Brachioradialis innervation

A

Radial nerve C-5 C6 C7

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3
Q

Brachioradialis action

A

Relatively weak flexion of elbow joint, maximal when forearm is in mid pronated position

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4
Q

Extensor carpi radialis longus proximal attachment

A

Lateral Supra-epicondylar ridge of humerus

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5
Q

Extensor carpi radialis longus distal attachment

A

Dorsal aspect of base of second metacarpal

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6
Q

Extensor carpi radialis longus-innervation

A

Radial nerve C6 and C7

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7
Q

Extensor carpi radialis longus action

A

Extend and ABducts; extensor carpi radialis brevis active during fist clenching

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8
Q

Extensor carpi radialis brevis proximal attachment

A

Lateral epicondyles of humerus

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9
Q

Extensor carpi radialis brevis distal attachment

A

Dorsal aspect of base of the third metacarpal

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10
Q

Extensor carpi radialis brevis innervation

A

Dorsal branch of radial nerve (C7 C8)

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11
Q

Extensor carpi radialis brevis action

A

Extend and aBducts wrist joint; extensor carpi radialis brevis active during fist clenching

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12
Q

Extensor digitorum proximal attachment

A

Lateral epicondyle of humerus

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13
Q

Extensor digitorum distal attachment

A

Extensor expansions of medial four fingers

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14
Q

Extensor digitorum action

A

Extend wrist joint, extend medial four fingers primarily metacarpophalangeal joints, secondarily at interphalangeal joints

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15
Q

Extensor digiti minimi- proximal attachment

A

Lateral epicondyles of humerus

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16
Q

Extensor digiti minimi distal attachment

A

Extensor expansion of fifth finger

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17
Q

Extensor digiti minimi innervation

A

Posterior interosseous nerve (c7, c8), continuation of deep branch of radial nerve

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18
Q

Extensor digiti minimi action

A

Extends wrist joint, extends fifth finger primarily at metacarpophalangeal joint, secondarily at interphalangeal joint

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19
Q

Extensor carpi ulnaris proximal attachment

A

Lateral epicondyles of humerus; posterior border of ulna via A shared aponeurosis

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20
Q

Extensor carpi ulnaris distal attachment

A

Dorsal aspect of base of the fifth metacarpal

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21
Q

Extensor carpi ulnaris action

A

Extends and ADDucts wrist joint (also active during fist clenching)

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22
Q

Supinator proximal attachment

A

Lateral epicondyles of humerus, radial collateral and anular ligaments, supinator fossa, crest of ulna

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23
Q

Supinator distal attachment

A

Lateral, posterior, and anterior surfaces of proximal third of radius

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24
Supinator innervation
Deep branch of radial nerve C7 c8
25
Supinator action
Supinates forearm; rotates radius to turn palm anteriorly or superiorly (if elbow is flexed)
26
Abductor pollicis longus-proximal attachment
Posterior surface of proximal halves of ulna, radius, and interosseous membrane
27
Abducts pollicis longus- distal attachment
Base of 1st metacarpal
28
Abducts pollicis longus- innervation
Posterior interosseous nerve ( c7, c8), continuation of deep branch of radial nerve
29
Abducts pollicis longus-action
Extends wrist joint, abducts thumb and extends it at carpometacarpal joint
30
Extensor pollicis longus- proximal attachment
Posterior surface of middle third of ulna and interosseous membrane
31
Extensor pollicis longus- distal attachment
Dorsal aspect of base of distal phalanx of thumb
32
Extensor pollicis longus- innervation
Posterior interosseous nerve ( c7, c8), continuation of deep branch of radial nerve
33
Extensor pollicis longus action
Extends wrist joint; extends distal phalanx of thumb at interphalangeal joint; extends metacarpophalangeal and carpometacarpal joints
34
Extensor pollicis brevis proximal attachment
Posterior surface of distal third of radius and interosseous membrane
35
Extensor pollicis brevis distal attachment
Dorsal aspect of base of proximal phalanx of thumb
36
Extensor pollicis brevis innervation
Posterior interosseous nerve ( c7, c8), continuation of deep branch of radial nerve
37
Extensor pollicis brevis action
Extends wrist joint; extends proximal phalanx of thumb at metacarpophalangeal joint; extends carpometacarpal joint
38
Extensor indicis proximal attachment
Posterior surface of distal third of ulna and interosseous membrane
39
Extensor indicis-distal attachment
Extensor expansion of second finger
40
Extensor indicis- innervation
Posterior interosseous nerve ( c7, c8), continuation of deep branch of radial nerve
41
Extensor indicis- action
Extends wrist joint; extends second finger (enabling its independent extension); helps extend hand at wrist
42
Pronator teres-proximal attachment
Ulnar head: coronoid process of ulna | Humeral head: medial epicondyle of humerus
43
Pronator teres- distal attachment
Middle of convexity of lateral surface of radius
44
Pronator teres innervation
Median nerve c6, c7
45
Pronator teres- action
Pronates and flexes forearm
46
Flexor carpi radialis- proximal attachment
Medial epicondyle of humerus
47
Flexor carpi radialis- distal attachment
Base of 2nd (3rd) metacarpal
48
Flexor carpi radialis- innervation
Median nerve (c6, c7)
49
Flexor carpi radialis- action
Flexes and aBducts hand at wrist
50
Palmaris longus- proximal attachment
Medial epicondyle of humerus
51
Palmaris longus- distal attachment
Distal half of flexor retinaculum, palmar aponeurosis
52
Palmaris longus- innervation
Median nerve (c7,c8)
53
Palmaris longus- action
Flexes hand (at wrist) and tenses palmar aperneurosis
54
Flexor carpi ulnaris- proximal attachment
Olecranon and posterior border of ulna (via aperneurosis)
55
Flexor carpi ulnaris- distal attachment
Pisiform, hook of hamate, 5th metacarpal
56
Flexor carpi ulnaris- innervation
Ulnar nerve (c7,c8)
57
Flexor carpi ulnaris- action
Flexes and aDducts hand at wrist
58
Flexes digitorum superficialis-proximal attachment
Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna Radial head: oblique line of radius
59
Flexor digitorum superficialis- distal attachment
Shafts ( bodies) of middle phalanges of medial four digits
60
Flexor digitorum superficialis- innervation
Median nerve (c7, c8, t1)
61
Flexor digitorum superficialis- action
Flexes wrist joint Flexes proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpalangeal joint
62
Flexor digitorum profundus-proximal attachment
Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane
63
Flexor digitorum profundus- distal attachment
Bases of distal phalanges of 2nd, 3rd, 4th, 5th digits
64
Flexor digitorum profundus- innervation
``` Lateral part ( to digits 2&3): median nerve (c8,t1) ( anterior interosseous branch) Medial part (to digits 4&5): ulnar nerve (c8,t1) ```
65
Flexor digitorum profundus-action
Flexes wrist joint | Flexes distal interphalangeal joints of digits 2,3,4,5; assists with wrist flexion
66
Flexor pollicis longus- proximal attachment
Anterior surface of radius and adjacent interosseous membrane
67
Flexor pollicis longus- distal attachment
Base of distal phalanx of thumb
68
Flexor pollicis longus- innervation
Anterior interosseous nerve, from median nerve (c8,t1)
69
Flexor pollicis longus- action
Flexes wrist | Flexes metacarpophalangeal and interphalangeal joints of thumb
70
Pronator quadratus- proximal attachment
Distal quarter of anterior surface of ulna
71
Pronator quadratus- distal attachment
Distal quarter of anterior surface of radius
72
Pronator quadratus-innervation
Anterior interosseous nerve, from median nerve (c8,t1)
73
Pronator quadratus- action
Pronate a forearm; deep fibers bind radius and ulna together

forearm (1 decks)

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