Question

Identify FOUR (4) parts/features of a typical long bone. Define osteon. Name the four types of bone cells. Which of those cells is capable of cell division? Which of those cells produces most bone tissue? What is the difference between red and yellow bone marrow? Which method of bone formation (osteogenesis) is responsible for the formation of most of the bones in our body?

Answer 1

Answer

1) Four features of long bone are :
- Epiphysis
- Epiphyseal line
- Metaphysis
- Diaphysis



2) Osteon is the structural unit of the compact bone that contains haversian canal surrounded by lamella with osteocytes residing inside the lacuna.

3) Four types of bone cells are :
- Osteogenic cells
- Osteoblast
- Osteocyte
- Osteoclast

4) Osteogenic cells is capable of cell division.

5) Osteoblast cells produces most bone tissue.

6)

• Red bone marrow is red in colour and usually found in flat bones.
  - It contains hematopoietic stem cells that produces blood cells.
  
  
• Yellow bone marrow is yellow in colour and usually found in long bones.
  - It contains mesenchymal stem cells.

7) The method of bone formation (osteogenesis) responsible for the formation of most of the bones in our body is : Endochondral ossification