1. Human Body Systems
Circulatory System

2. What does this body system do for us?
Transport oxygen to all of our cells
Transport carbon dioxide away to lungs
Transport nutrients to all cells
Transport waste materials away
Distribute our immunity cells/molecules
Distribute our blood clotting agents
Distribute hormones about our body
Help in thermoregulation – distributing heat

5. The Mammalian Heart

8. Blood Pressure

9. Blood Pressure
The pressure the blood exerts on the walls of the blood vessels
The heart is a pump and creates this pressure
The blood vessels contain muscle and elastic tissue and may constrict and dilate which is a factor

11. Blood vessels
Three major types:
Arteries
Capillaries
veins

12. Arteries:

14. Capillaries

17. Veins:

19. Blood