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 [...]
In this article we will discuss about:- 1. Origin and Development of Cardiac Muscle 2. Histology of Cardiac Muscle 3. Fine Structure 4. Blood Vessels, Lymphatics and Nerves 5. Metabolism. Origin and Development of Cardiac Muscle: Cardiac muscles in the embryo are originated from the mesenchymal tissue. They are formed of the splanchnopleure adjoining the endothelium of the cardiac primordium. [...]