Topic 9 - Digital extensors of the forelimb and supinators of the radioulnar joint Flashcards

1
Q

M.supinator

A

O: Lat. epicondyle + lat. collateral lig.
I: Prox. cran. of radius
A: Supinate forearm and forefoot - rotate lat.

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2
Q

M.brachioradialis

A

(Only 33% of dogs have it)
O: Crista epicondyli lat.
I: Dist. med. of radius
A: Supinate forarm and forefoot - rotate lat.

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3
Q

M.extensor digitorum communis

A

O: Lat. epicondyle
I: Proc. extensorius of dist. phalanges 2-5
A: Extend the joints of the digits and the carpus

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4
Q

M.extensor digitorum lateralis

A

O: Lat. collateral lig. of elbow and lat. epicondyle
I: At the level of first digit it unites with tendon of common dig.ext. and interosseus muscles. Prox. end of phalanges 3-5, mainly proc.ext.
A: Extend the carpus and joints of these digits

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5
Q

M. extensor pollicis longus et indicis

A

O: Middle third of lat. border of ulna
I: Pollicis: head of Mc.1, indicis: unites with tendon of common dig.ext. to insert on distal phalang of digit 2
A: Extend these digits and adduct the dew claw

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6
Q

M.abductor digiti pollicis (1) longus

A

O: Adjacent lat. surface of radius and ulna, and the interosseous membrane
I: Med. on the prox. base of Mc.1
A: Abduct and extend the 1. digit

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7
Q

The muscles

A
M.supinator
M.brachioradialis
M.ext.dig.communis
M.ext.dig.lateralis
M.ext.dig.pillicis et indicis
M.abductor pollicis longus
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