<prompt> Which of the following is not a true statement regarding dentinDentinal tubules are not secretory products of the odontoblastDentinal tubules are the path taken by OdontoblastsDentinal tubules represent path taken by odontoblast from DEJ to pulp1st convexity from pulp face towards incisal direction.  <response>: Option D is incrorrect as 1st convexity from pulp face towards root and 2nd convexity from pulp face towards incisalocclusal direction. 