Quiz 2: Histology and Embryology
E The nodule in the area of the labial piercing was diagnosed as a cyst. A cyst is not composed entirely of connective tissue it is an abnormal pathologic sac with the cavity lined by epithelium; it is enclosed by connective tissue and is diagnosed on the basis of histologic appearance and location.
A Cells of the stratum basal layer undergo mitosis. This layer forms cells to maintain and replace cells that are lost at the surface. The cells that are produced in the basal layer move up through the other layers until they reach the surface where they are shed
C The most accepted theory is that hypersensitivity of the dentinal surface to external stimuli is caused by fluid movement within the tubules that transmit signals to the nerves in the pulp chamber.