In this article we will discuss about the structural pattern of a human tooth with the help of a suitable diagram. Histologically, a tooth contains enamel, dentine, cementum and pulp (Fig. 1.58). Enamel is epithelial in origin and encircles dentine beyond the plane of gum. It is the hardest substance found in the body. Chemically, it has calcium phosphate in [...]
Development of bone begins from mesoderm in the embryonic life (from sixth week) and a good number of bones of the human body continue to grow until a person reaches about twenty-fifth years. There are two processes of ossification-intramembranous and intracartilaginous (endochondral). The bones of the cranial vault and the mandible are membranous in origin. The bones of the limbs, [...]
The following points highlight the six main cells of areolar tissue along with its function. They are:- 1. Fibroblasts Cells 2. Histiocytes Cells 3. Basophil Cells 4. Plasma Cells 5. Pigment Cells 6. Mast Cells. 1. Fibroblasts Cells (Fibrocytes): Fibroblast is an active cell. Fibrocyte is an inactive one. These cells are usually elongated containing an oval nucleus and are [...]