Muscles of the forearm Flashcards

1
Q

What are the compartments of the distal humerus?

A

Lateral; Extensor/Supinator compartment

Medial; Flexor/Pronator compartment

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2
Q

What are the two common origins for the forearm compartments?

A

Lateral epicondyle; Common extensor tendon of the forearm (Posterior compartment)

Medial epicondyle; Common flexor tendon of the forearm (Anterior compartment)

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3
Q

What are the muscles on the lateral supercondylar crest that insert in the post. compartment of the forearm?

A

Brachioradialis (a flexor even though ends in extensor compartment)
Extensor carpi radialis longus

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4
Q

What are the muscles on the medial supercondylar crest that insert in the Ant. compartment of the forearm?

A

Pronator teres

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5
Q

What are the muscles that insert on the forearm that do not originate from the common tendons?

A

Biceps brachii
Brachialis
Pronator teres

Brachioradialis
Extensor carpi radialis
Triceps brachii`

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6
Q

How many muscles are in the forearm anterior compartment?

A

8

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7
Q

What are the anterior forearm compartment muscles?

A

Superificial;

Pronator teres
Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis

Intermediate;
Flexor digitorium superficialis

Deep;
Pronator quadratus
Flexor digitorium profundus
Flexor pollicis longus

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8
Q

What are the nerve supplies of the ant. forearm?

A

Median and ulnar

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9
Q

How many muscles do the median and ulnar nerves innervate in the ant. forearm?

A

Median; 6.5

Ulnar 2.5

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10
Q

Name the muscles the median and ulnar nerve innervate in the ant. forearm;

A

Median; PT, FCR, PL, FDS, PQ and Lat. 1/2 of FDP

Ulnar; FCU and Medial half of FDP

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11
Q

What are the muscles of the posterior forearm?

A

Sup. = BR, A, ECRL, ECRB, ED, EDM, ECU

Deep. = EI, EPL, APL, EPB, SuP

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12
Q

What supplies the post. forearm?

A

Radial nerve.

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