The Circulatory System

The human body is organised into cells, tissues and organ systems. They interrelate to enable the human body to function.

Healthcare and fitness professionals need to monitor cellular, tissue or organ activity. This information can provide details about how effectively a
particular individual is able to perform under different conditions.
 

You should understand:
• the structure of the heart including the role of the four chambers, the valves in double circulation and the characteristic features of arteries, veins and capillaries;
• how heart rate is affected by nervous inputs;
• how blood pressure changes with the activity of the body;