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
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