At the end of this topic:-

1. You should be able to list the four main components of blood.

2. Be able to say how these four components operate in relation to the functions they perform.

The blood is made up of four main components each of which has one or more specific functions.

List them in your exercise book.

Now try and answer all the questions on the different components of blood.

[answer in your exercise books, in sentences]

A. PLASMA

Accounts for 55% of the blood’s composition

1. What colour is it?

2. How much of plasma is water?

3. What are its’ 4 functions? - Write a sentence for each.

a. ___________________________________________________________

b. ___________________________________________________________

c. ___________________________________________________________

d. ___________________________________________________________

 

B. RED CELLS

1. What is another name for these?

2. How long does a red blood cell live for - why is it so short a time?

3. Where are the new red blood cells made?

4. How many red blood cells are there in a drop of blood?

5. What happens to the dead cells?

6. What is the main job of the red blood cells?

7. What is meant by ANAEMIA?

 

C. WHITE CELLS

1. What is another name for these?

2. Are they smaller or bigger than red cells?

3. How many white blood cells are there in a drop of blood?

4. What are the 2 main functions of white blood cells?

a) _______________________________________________________

b) _______________________________________________________

 

D. PLATELETS