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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Which of the following is the pacemaker of the gastrointestinal tract?
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The correct answer is  Interstitial cells of Cajal are the pacemaker cells of the GIT that initiate the basic electric rhythm(BER). These are stellate mesenchymal pacemaker cells with smooth muscle-like features. In the stomach and the small intestine, these cells are located in the circular smooth muscle layer near the myenteric plexus. In the colon, they are at the submucosal border of the circular muscle layer. Ref: Ganong&;s review of Medical physiology 26th edition Pgno: 494-495