Bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus. ... Synonym: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus. ... (05 Mar 2000) ... 
the convolution of the frontal lobe immediately in front of the central sulcus; the primary motor area of the cerebral cortex; called also anterior central gyrus.
Type: Term Definitions: 1. bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus. Synonyms: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus
[n] - the convolution of the frontal lobe that is bounded in back by the central gyrus
noun the convolution of the frontal lobe that is bounded in back by the central sulcus and that contains the motor area