Skeletal tissue - bone, Biology

BONE -

  1. Bone is the hardest tissue in the body and supports various organs.
  2. The inorganic salts present in the matrix are calcium phosphate, calcium carbonate, calcium fluoride, magnesium phosphate, etc.
  3. If a bone is dried, its organic matter is destroyed and inorganic part is left behind.
  4. On the other hand if a bone is kept in a dilute HCl for some time, its inorganic part is dissolved and organic part is left behind. Such a bone is called decalcified bone.

1267_bone.png

STRUCTURE OF DECALCIFIED MAMMALIAN BONE -

  1. It consists of four parts : Periosteum, Matrix, Endosteum and Bone marrow.

1400_dry bone.png

1.      PERIOSTEUM -

  1. It is a thick and tough sheath that forms an envelop around the bone.

2.      MATRIX -

  1. It is composed of a protein called ossein.
  2. The main salts found in the matrix are calcium phosphate, calcium carbonate, sodium chloride and magnesium phosphate.
  3. Of these calcium phosphate is maximum in the vertebrae bone.
  4. The Haversian canals a characteristic feature of the mammalian bones, are present in the matrix.
  5. Each Haversian canal contains an artery, a vein, a lymph vessel, a nerve and some bone cells, all packed in with connective tissue.
  6. The haversian canals are interconnected by transverse channel's the Volkmann's canals.

3.      ENDOSTEUM -

  1. It is present outer to the bone marrow cavity.
  2. Like the periosteum, it comprises white fibrous tissue and osteoblasts. But the white fibrous tissue is present here inner to osteoblasts.
  3. The long bone thus grows in thickness from two sides. This type of growth is called bidirectional growth.

4.      BONE MARROW -

  1. In long bones such as limb bones a cavity called bone marrow cavity is present inner to the endosteum.
  2. The bone marrow cavity is filled with a soft kind of tissue which is called myelogenous or myeloid tissue.
Posted Date: 10/1/2012 3:11:35 AM | Location : United States







Related Discussions:- Skeletal tissue - bone, Assignment Help, Ask Question on Skeletal tissue - bone, Get Answer, Expert's Help, Skeletal tissue - bone Discussions

Write discussion on Skeletal tissue - bone
Your posts are moderated
Related Questions
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Biota of the Neritic Oceanic Zone This zone constitutes 75 per cent of the total oceanic area and is relatively rich in species and high in productivity owing to factors such

The heart is enclosed in a membranous sac called the pericardium. It has two layers- the fibrous pericardium which is the outer layer and the serous pericardium that lies inside th

Assignment on CAM

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Q. Function of Glutamate? Glutamate It is the principal excitatory transmitter in the brain and is found throughout the central nervous system. Receptors Glutamate rec

The cell membrane is produced of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a particular type of lipid to which one extremity a phosphate group i

REPRODUCTIV E ISOLATION - According to the biological species concept, members of one species are reproductively isolated from members of all other species. Accordingly, re

Q. Are organic solvents like benzene and ether non-polar or polar substances? the ethers and Benzene are molecules without electrically charged portions and thus they are non-p

Q. What is the route of the ingested food from swallowing until the duodenum? Until reaching the duodenum the food enters the mouth, passes the pharynx, passes the stomach and