Babinski's sign


n.

Babinski's reflex
Weakness of the platysma muscle on the affected side in hemiplegia, evident in such actions as blowing or opening the mouth.
A sign of hemiplegia in which the thigh on the paralyzed side flexes and the heel is raised when a person attempts to sit up while lying supine with legs extended and arms crossed upon the chest.
A sign of hemiplegia in which the forearm on the affected side, when placed in a position of supination, turns into the pronated position.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.