The Bone is an organ.

From our basic sciences most of us already have some knowledge on the bones as that part of our body responsible for our being able to have form and shape and even move freely. While this is true, we'll be looking at an interesting picture on the make up of the bone.

Yes as our topic implies, the bone is an organ. I'm sure so many of us may not have looked at it from that angle.

Why do we call the bone an organ?

The biological definition of an organ tells us that it is a group of tissues that perform a specific function.
This means that the bone is a collection of certain kinds of tissues that are specialized in providing rigidity and shape for the human body as well as other functions which we shall see.

Types of bones.

We basically have two types of bones based on their make up and they are as follows;

a. Compact or Cortical bone: As the name implies it is that part of the tissue bone that forms the hard exterior.
-This type of bone is strong and dense.
- It facilitates the protection action of bones.
- Serves as lever for movement.
-It is a reservoir and release centre of chemical elements like calcium.
- It contributes about 80% of the weight of the human skeleton.

B. Cancellous/ Spongy bone:

This type of bone is softer and weaker in nature compared to the compact bone.
- It has a larger surface area which makes it a suitable area for metabolic activities such as exchange of chemical elements like calcium.
- It is typically found at the end of long bones like the femur, vertebrae and so on, most times close to the joints.
- They are highly vascular, meaning they contain lots of blood vessels.
- They serve as the reservoir for bone marrow where red blood cell production takes place.

One interesting fact about the bones is that they undergo REMODELLING, meaning they are constantly broken down and built up again. This is made possible through the actions of certain specialized cells within the bone tissue that carry out these functions

They are:-
-The osteoclasts which are responsible for breaking down the bones.
-The osteoblasts which build up new bone tissues.
- the osteocytes which hold the bones together.

In conclusion all we've been saying is that ;
- your bone is an organ because it carries out specialized functions.
- The bone is of two types depending on their make up.
The bones aid movement, red blood cell production, serves as a store of calcium which is essential for many body activities like muscle contraction.
- They have the ability to be broken down and remodeled.

Hope this has added to the knowledge you already have on the bone?

Credits: Wikipedia
www.mananatomy.com

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