Forearm Flashcards

1
Q

Pronator Teres

A

Origin: medial epicondyle of humerus and coronoid process of ulna

Insertion: lateral surface of radius

Action: pronate forearm, assist to flex elbow

Nerve: median C6, 7

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2
Q

Flexor Carpi Radialis

A

Origin: medial epicondyle of humerus

Insertion: bases of 2nd and 3rd metacarpals

Action: flex and abduct wrist, may assist to flex elbow

Nerve: median C6, 7, 8

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3
Q

Palmaris Longus

A

Origin: medial epicondyle of humerus

Insertion: flexor retinaculum and palmar aponeurosis

Action: tense palmar fascia, flex wrist, may assist to flex elbow

Nerve: median C6, 7, 8, T1

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4
Q

Flexor Carpi Ulnaris

A

Origin:

  • humeral head: medial epicondyle of humerus
  • ulnar head: posterior surface of proximal ulna (olecranon process)

Insertion: pisiform, hook of hamate and base of 5th metacarpal

Action: flex and adduct wrist, assist to flex elbow

Nerve: ulnar nerve C7, 8, T1

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5
Q

Flexor Digitorum Superficialis

A

Origin: medial epicondyle of humerus, ulnar collateral ligament, coronoid process of ulna, interosseous membrane and proximal shaft of radius

Insertion: sides of middle phalanges of fingers 2-5

Action: flex 2nd through 5th fingers, flex wrist

Nerve: median nerve C7, 8, T1

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6
Q

Flexor Digitorum Profundus

A

Origin: anterior and medial surfaces of of proximal ulna

Insertion: base of distal phalanges, palmar surface of fingers 2-5

Action: flex 2nd through 5th fingers, assist to flex wrist

Nerve:

  • 1st and 2nd: median nerve C7, 8, T1
  • 3rd and 4th: ulnar nerve C7, 8, T1
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7
Q

Flexor Pollicis Longus

A

Origin: anterior surfaces of radius and interosseous membrane

Insertion: base of distal phalanx of thumb

Action: flex thumb, assist to flex wrist

Nerve: median nerve C6, 7, 8, T1

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8
Q

Pronator Quadratus

A

Origin: medial, anterior surface of distal ulna

Insertion: lateral, anterior surface of distal radius

Action: pronate forearm

Nerve: median nerve C7, 8, T1

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9
Q

Brachioradialis

A

Origin: proximal lateral supracondylar ridge of humerus

Insertion: styloid process of radius

Action: flex elbow, assist to pronate and supinate forearm when movements are resisted

Nerve: radial nerve C5, 6

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10
Q

Extensor Carpi Radialis Longus

A

Origin: distal lateral supracondylar ridge of humerus

Insertion: base of 2nd metacarpal

Action: extend and abduct wrist, assist to flex elbow

Nerve: radial nerve C5, 6, 7, 8

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11
Q

Extensor Carpi Radialis Brevis

A

Origin: lateral epicondyle of humerus

Insertion: base of 3rd metacarpal

Action: extend and abduct wrist, assist to flex elbow

Nerve: radial nerve C6, 7, 8

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12
Q

Extensor Digitorum

A

Origin: lateral epicondyle of humerus

Insertion: base of middle and distal phalanges of fingers 2-5

Action: extend 2nd through 5th fingers; assist to extend wrist

Nerve: radial nerve C6, 7, 8

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13
Q

Extensor Carpi Ulnaris

A

Origin: lateral epicondyle of humerus

Insertion: base of 5th metacarpal

Action: extend and adduct wrist

Nerve: radial nerve C6, 7, 8

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14
Q

Supinator

A

Origin: lateral epicondyle of humerus, radial collateral ligament, annular ligament and supinator crest of ulna

Insertion: anterior, lateral surface of radial shaft

Action: supinate forearm

Nerve: radial nerve C5, 6, 7

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15
Q

Abductor Pollicus Longus

A

Origin: posterior surface of radius and ulna, and interosseous membrane

Insertion: base of 1st metacarpal

Action: abduct and extend thumb, abduct wrist

Nerve: radial nerve C6, 7, 8

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16
Q

Extensor Pollicus Brevis

A

Origin: posterior surface of radius and interosseous membrane

Insertion: base of proximal phalanx of thumb

Action: extend thumb, abduct wrist

Nerve: radial nerve C6, 7, 8

17
Q

Extensor Pollicus Longus

A

Origin: posterior surface of ulna and interosseous membrane

Insertion: base of distal phalanx of thumb

Action: extend thumb, abduct wrist

Nerve: radial nerve C6, 7, 8

18
Q

Extensor Indicis

A

Origin: posterior surface of ulna and interosseous membrane

Insertion: tendon of extensor digitorum at level of 2nd metacarpal

Action: extend and adduct 2nd finger, may assist to extend wrist

Nerve: radial nerve C6, 7, 8