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AT 621: Anatomy II > Forearm muscles > Flashcards

Forearm muscles Flashcards

1
Q

Brachioradialis

A

PA: Superior 2/3 of lat supracondylar ridge of humerus, lat inter muscular Setpum

DA: Distal aspect of lat surface of radius, proximal to styloid process

INN: Radial (C5,6)

ACTIONS: Flexes the elbow

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2
Q

Extensor Carpi Radialis Longus

A

PA: Inf 1/3 of supracondylar ridge, inter muscular septum, lat epicondyle of humerus by CET

DA: Base of 2nd MC on dorsal lat aspect

INN: Radial C6,7

ACTIONS: Extends the wrist, abducts the hand (radial)

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3
Q

Extensor Carpi Radialis Brevis

A

PA: Lat epicondyle of humerus by CET, radial collateral ligament, adjacent inter muscular septum

DA: base of 3rd MC on dorsal aspect

INN: Radial C7,8

ACTIONS: Extends the wrist, abducts the hand (radial dev)

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4
Q

Extensor Digitorum

A

PA: Lat epicondyle by CET, adjacent inter muscular septum & ante brachial fascia

DA: Dorsal digital expansions of lesser 4 digits

INN: Deep branch of radial C7, 8

ACTIONS: Extends the IP’s & MCP’s of the lesser 4 digits through dorsal expansion, wrist extension

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5
Q

Extensor Digiti Minimi

A

PA: Lat epicondyle by CET & adjacent ante brachial fascia

DA: dorsal digital expansion of 5th digit

INN: Deep branch of the radial nerve C 7, 8

ACTIONS: Extends 5th digit & wrist

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6
Q

Extensor Carpi Ulnaris

A

PA: Lat epicondyle by CET, post border of ulna, overlying ante brachial fascia

DA: Base of 5th MC at medially located tubercle

INN: Deep branch of the radial N. C7, 8

ACTIONS: Extends wrist, adducts the hand (ulnar dev)

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7
Q

Anconeus

A

PA: post aspect of lat epicondyle

DA: annular ligament lat aspect of olecranon, proximal 1/4 of post surface of radial shaft

INN: Radial C6,7,8

ACTIONS: Assists in extending the elbow

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8
Q

Supinator

A

PA: Lat epicondyle of humerus, radial collateral ligament, annular ligament, supinator crest of ulna

DA: Proximal 1/3 of radius along post & lat surfaces

INN: Deep branch of radial N. C6,7

ACTIONS: Supinates the FA

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9
Q

Abductor Pollicis Longus

A

PA: Middle post shaft of ulna (distal to attach. of anconeus), interosseous membrane, middle 1/3 of post surface of radius (distal to supinator)

DA: base of 1st MC on radial side & trapezium

INN: Posterior interosseous N. C7, 8

ACTIONS: Abducts the thumb at 1st CMC joint

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10
Q

Extensor Pollicis Brevis

A

PA

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11
Q

Extensor Pollicis Longus

A

PA

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12
Q

Extensor Indices

A

PA

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13
Q

Abductor pollicis brevis

A

PA

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14
Q

Opponens Pollicis

A

PA

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15
Q

Flexor pollicis brevis

A

PA

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16
Q

Palmaris Brevis

A

PA

AT 621: Anatomy II (3 decks)

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