1.

Which is true of contractile tissue of sphincter ? 1. Mesodermal 2. Contain stretch receptors 3.Rhythmicity 4 . IndefatigibleA. All the fourB. Only 1 ,2 and 3C. Only 1 , 2 and 4D. Only 1, 3 and 4.

Answer» Correct Answer - B


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