direct antagonists

An obsolete term for a group of two muscles that pull in completely opposite directions, with a net effect of no movement in the face during simultaneous contraction.

References in periodicals archive ?

The function of the contralateral SR is normal and, in contrast to an IO palsy, there is no over-action of the SO (direct antagonists).

Sherrington's laws applies not only to the eye but also to other muscle pairings throughout the body, and states that any innervation to a muscle to contract will be accompanied by an equal inhibitory input to the direct antagonist to relax.

According to Sherrington's law, which of the following correctly identifies the direct antagonist to the right inferior oblique muscle?

Extraocular muscles: anatomy and clinical investigation

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