Blood

What you need to know

Describe blood as a complex tissue consisting of a fluid plasma that suspends red blood cells, white blood cells, and platelets.
Explain the specific physiological functions of plasma, red blood cells, white blood cells, and platelets within the human body.
Recognise and accurately identify the different types of blood cells from photographs or biological diagrams.
Explain how the physical structure of each type of blood cell is highly adapted to efficiently carry out its required function.