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
What do you understand by term - acanthus The egg and larval phase of an acanthocephalan which passes from the female parasite to the feces of host.

Explain different modes nutrition like Autotroph,hetrotroph,saprotroph,holozoic

What is the excretory organ of an agama lizard

What do you understand by tegument? Outer covering of parasitic flatworms, including tapeworms and flukes, comprising a syncytial outer layer of cytoplasm connected to cell bod

Trout beck zone - Lotic Ecosystem This is larger and more constant than the head stream. The greater volume of torrential water carves channels into exposed rock floor (bed ro

describe the discovery of new fossil evidence for evolution

How cells are studied We learnt about the evolution of the cell and a historical account of the growth of cell biology. In this section, you will study about the various tools

CARE OF RECORDS Patient's/client's records are unquestionably a valuable documents. These should be made on paper of good quality and protected from soiling, and burning. Th

If the condition or the post disease as a result of intraradicular infection----> treated conventionally via apex " non-surgical ", ---->Here we have 2 options either coronal

Em u l sio n preparation Frozen deboned meat, fat and by-products are tempered at 0° to 4° C for 12to 15 hr and cut into pieces and coarse minced by passing through 8, 10 o