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

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

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

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

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