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Muscles O,I&A's > Posterior compartment of forearm > Flashcards

Posterior compartment of forearm Flashcards

1
Q

Origin of Abductor Pollicis Longus

A

Middle 1/2 of posterior surface of radius
Interossesous membrane
Mid portion of posterolateral ulna

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2
Q

Insertion of Abductor Pollicis Longus

A

Dorsal side of the base of the 1st metacarpal

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3
Q

Action of Abductor Pollicis Longus

A

Abducts thumb at carpometacarpal joint

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4
Q

Origin of Anconeus

A

Lateral epicondyle of humerus

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5
Q

Insertion of Anconeus

A

Lateral side of olecranon and upper 1/4 of ulna

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6
Q

Action of Anconeus

A

Extends forearm

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7
Q

Origin of Extensor Carpi Ulnaris

A

Common extensor tendon
Middle 1/2 of posterior border of ulna

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8
Q

Insertion of Extensor Carpi Ulnaris

A

Medial side of the base of the 5th metacarpal

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9
Q

Action of Extensor Carpi Ulnaris

A

Adducts the hand, extends the wrist

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10
Q

Origin of Extensor Digiti Minimi

A

Common extensor tendon (lateraly epicondyle of humerus)

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11
Q

Insertion of Extensor Digiti Minimi

A

Joins the extensor digitorum tendon to the 5th digit and inserts into extensor expansion

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12
Q

Action of Extensor Digiti Minimi

A

Extends the metacarpophalangeal (MCP), proximal interphalangeal (PIP) and distal interphalangeal (DIP) of 5th digit

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13
Q

Origin of Extensor Digitorum

A

Common extensor tendon ( lateral epicondyle of humerus)

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14
Q

Insertion of Extensor Digitorum

A

Extensor expansion of digits 2-5

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15
Q

Action of Extensor Digitorum

A

Extends MCP, PIP & DIP joints 2-5
Extends wrist

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16
Q

Origin of Extensor Indicis

A

Interosseous membrane
Posterolateral surface of distal ulna

17
Q

Insertion of Extensor Indicis

A

Joins the tendon of extensor digitorum to the 2nd digit and inserts into extensor expasion

18
Q

Action of Extensor Indicis

A

Extends index finger at MCP, PIP & DIP joint

19
Q

Origin of Extensor Pollicis Brevis

A

Interosseous membrane
Posterior surface of distal radius

20
Q

Insertion of Extensor Pollicis Brevis

A

Base of proximal phalanx of thumb

21
Q

Action of Extensor Pollicis Brevis

A

Extends thumb at MCP joint

22
Q

Origin of Extensor Pollicis Longus

A

Interosseous membrane
Middle part of posterolateral surface of ulna

23
Q

Action of Extensor Pollicis Longus

A

Extends thumb at IP joint

24
Q

Insertion of Extensor Pollicis Longus

A

Base of distal phalanx of thumb

25
Q

Action of Supinator

A

Supinates forearm

26
Q

Insertion of Supinator

A

Lateral side of proximal 1/3 of radius

27
Q

Origin of Supinator

A

Lateral epicondyle of the humerus
Supinator crest & fossa of ulna
Radial collateral ligament
Annular ligament

Muscles O,I&A's (27 decks)

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