According to the density and hardness, bone is divided into two types: 1. Compact Bone 2. Cancellated Bone. 1. Compact Bone: Distribution: The outer layer of all bones and the shaft (diaphysis) of the long bones are entirely compact in nature. Histology: The shaft of the long bones (Fig. 1.48) is the typical example of this type of bone tissue. [...]
In this article we will discus about the factors controlling calcification of bones in humans. Also learn about the proportion of inorganic compounds in bone. i. Protein constituent of the cartilage has got affinity towards Ca++ and adsorbs calcium readily. However this favours the deposition of calcium as tricalcium phosphate. ii. Reduction of protein concentration in the blood and also [...]
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 [...]