Topic 8 - Carpal extensors and supinators of the radioulnar joint Flashcards

1
Q

M.supinator

A

O: Lat. epicondyle and lat. collateral lig.
I: Cran. surface of the prox. of the radius
A: Supinate forearm and forefoot - rotates lat.

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2
Q

M.brachioradialis

A

(Just 33% has it)
O: Crista epicondylus lat.
I: Dist. med. of radius
A: Supinates forearm and forefoot - rotates lat.

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3
Q

M.extensor carpi radialis

A

O: Lat. epicondylar crest
I: Dorsal surface of base of Mc.2+3
A: Strongest extensor of the carpus

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4
Q

M.extensor carpi ulnaris

A

O: Lat. epicondyle
I: Lat. aspect of the base of Mc.5 and accessory carpal bone.
A: Supports carpus when extended to bear weight. Also help in flexion, abduction and lat. rotation of the carpal joint - because of the tendon to acc.carpal bone.

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5
Q

The muscles

A

M.supinator
M.brachioradialis
M.ext. carpi radialis
M.ext. carpi ulnaris

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