1. Purpose of Circulatory System
transports materials to and from your cells
Also known as the Cardiovascular System
cardio means heart
vascular means vessel

2. Circulation the movement of blood is called circulation
Pulmonary Circulation- blood flow between the heart and the lungs
Systemic Circulation- blood flow between the heart and the rest of the body

3. Parts of the Circulatory System
Blood – a mixture of water, minerals, nutrients, sugars and proteins
red blood cells carry oxygen
Heart- muscular organ about the size of your fist
- pumps blood

4. Parts of the Circulatory System (continued)
Blood Vessels- hollow tubes that transport blood - arteries: carry blood away from the heart - veins: carry blood towards the heart - capillaries: smallest blood vessel, only one blood cell can pass through single file

5. Medical Problems
atherosclerosis: fatty materials, such as cholesterol, build up on the inside of blood vessels hypertension: abnormally high blood pressure heart attack: when a major artery that supplies blood to the heart becomes blocked, a person has a heart attack and part of the heart can die