 |
|   | ||
 | ||||
Blood is a complex organ made up of three distinctly different cellular components and plasma, a straw-coloured fluid in which the components and other products are suspended.
 | The three components are red blood cells (erythrocytes), white blood cells (leukocytes) and platelets (thrombocytes) |
.gif) | |
| LEARNING GUIDE
This page is for information only. There are no tests on this background information. But you could, if you wish, explore the links below and then try the quiz |
 | In a pinprick of blood there are 6 million red blood cells, each carrying an estimated 640 million molecules of haemoglobin
Click on the picture to learn more |
 | In a pinprick of blood there are between 4,000 and 10,000 white blood cells, making up the body's first line of defence against disease and infection
Click on the picture to learn more |
 | In a pinprick of blood there are between 150,000 and 400,000 platelets
Click on the picture to learn more |
 | Plasma is the straw-coloured fluid in which the cellular components of blood are suspended. It plays a vital role in stopping bleeding.
Click on the picture to learn more |
 | Blood count calculations |
 |
|
|