1
Pace maker cells of gastro-intestinal motility is
EXPLANATION
Gastrointestinal Motility, Interstitial Cells
- Gastrointestinal Pacemaker Cells: The Interstitial Cells of Cajal (ICC) are specialized mesenchymal pacemaker cells embedded within the circular and longitudinal smooth muscle layers of the gastrointestinal tract.
- Slow Waves: Spontaneously generate rhythmic electrical slow waves (Basic Electrical Rhythm, BER) via rhythmic calcium influx through anoctamin-1 ($Ano1$) chloride channels, coordinating the frequency and direction of gut peristalsis.
Correct option: (2) Interstitial cells of Cajal
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