Question

HELP ME WITH THIS PLEASEE

1 List two structures of the circulatory system other than blood.

2 What is the liquid part of the blood called?

3 Why are red blood cells red?

4 State the function of the red blood cells in the circulatory system.

5 State the functions of the two types of white blood cells in the blood.

6 Give two differences between the structure of red blood cells and white blood cells.

7 What are platelets and what is their function in the blood?

Answer 1

1 veins and arteries

2 plasma

3 because they contain hymoglobin which is red in colour

4 they carries oxygen around the body

5 lymphocyte : engulf pathogens and destroy them within

phagocytes : sends toxins that destroy pathogens where they are

6 red blood cells are bio concave to increase surface area for carrying oxygen whereas white blood cells some are free form shape especially lymphocytes to squeeze through capillaries in a way to where the pathogens are located

7 platelets are small blood components that helps in blood clotting to avoid the excessive bleeding