RBC's

Hello everyone! Today we will discuss about red blood cells or otherwise known as RBC. 

We will discuss about the components of blood to understand where the RBC. Also we should know how much percent of RBC are in blood.

Components of blood:

In blood there are

1. Plasma
2. WBC
3. RBC
4. Platlets

So by the above image we can see that the RBC's are present inside the blood. We can see that 44% of blood is RBC.

RBC:

RBC are also called as Red Blood Cells. The scientific name for RBC or red blood cells is erythrocytes. have you wondered why erythrocytes are red in colour. There is a reason. Because of the pigment known as hemoglobin. Hemoglobin is present in erythroctes. Hemoglobin helps in the transferring of gases like oxygen. In hemoglobin, hemo means iron and globin means protein. 

Erythrocytes are produced in the bone marrow which is in the bones. 

But it is also a problem if too much erythrocytes are produced by the bone marrow. It is because too much erythrocytes can cause the blood to thicken and move slowly. The disease name when more amount of erythrocytes is present in blood is polycythmeia. 

The lifespan of RBC is 120 days. So it will die which causes a decrease of the amount of erythocytes in blood. The spleen is known as the graveyard of red blood cells.

If less amount of erythrocytes are produced by the bone marrow, the the kidney produces some thing called as erythropoetin. Eythropoetin stimulates the bone marrow to make it produce more erythrocytes. The disesase called when less amount of erythrocytes is present in blood is anemia.

The process of the production of erythrocytes is erythropoesis.

Do you know why the erythrocytes have a curve in a middle.?

There is a reason. It is because the erythrocytes don't have a nucleus. They don't have a nucleus because there is not enough space to carry oxygen in erythrocytes.

Thank you!