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The precentral sulcus lies parallel to, and in front of, the central sulcus. (A ''sulcus'' is one of the prominent grooves on the surface of the human brain.) The precentral sulcus divides the inferior, middle and superior frontal gyri from the precentral gyrus. In the majority of brains, the precentral sulcus is divided into two parts: the inferior precentral sulcus and the superior precentral sulcus. However, the precentral sulcus may also be divided into three parts or form one continuous sulcus. ==Additional images== File:Precentral sulcus animation small.gif|Position of precentral sulcus (shown in red). File:FrontalCaptsLateral.png|Lateral surface of right frontal lobe. Precentral sulcus is labeled by * and * *. File:Cerebral Hemisphere Demonstration - Sanjoy Sanyal - Neuroscience Lab Fall 2013 (cropped 4m51s to 5m20s) - Precentral sulcus.webm|Human brain dissection video (29 sec). Demonstrating location of the precentral sulcus. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「precentral sulcus」の詳細全文を読む スポンサード リンク
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