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Cardiovascular System - Your heart, blood, and blood vessels make up this system., Hormones - The cardiovascular system helps regulate the body by carrying these chemical signals throughout the body., Heart - made mostly of cardiac muscle tissue and is the size of a fist, and is located in the center of your chest cavity., Right Side of Heart - pumps oxygen-poor blood to the lungs, Left Side of the Heart - pumps oxygen-rich blood to the body, Atriums - upper chambers of the heart, Ventricles - lower chambers of the heart, Valves - flaplike structures that are located between the atria and ventricles, they close to prevent blood from going backward, Blood Vessels - blood travels throughout your body through these hollow tubes, 3 Types of Blood Vessels - arteries, capillaries, and veins, Artery - a blood vessel that carries blood away from the heart and contain thick walls, Blood Pressure - the pressure created by each heartbeat pumping blood into your arteries, Pulse - caused by the rhythmic change in your blood pressure, Capillaries  - tiny blood vessels that allow nutrients and oxygen to leave blood to get into your body's cells; allow carbon dioxide and other waste to leave your body's cells, Veins - a blood vessel that carries blood back to the heart, Pulmonary Circulation - the flow of blood from the heart to the lungs and back to the heart through arteries, capillaries, and veins, Systemic Circulation - the flow of blood from the heart to all parts of the body and back to the heart, Cardiovascular Problems - are caused by smoking, high levels of cholesterol in the blood, stress, physical inactivity, or heredity, Atherosclerosis - occurs when cholesterol builds up inside of blood vessels, clogging the blood vessels, Hypertension - abnormally high blood pressure, Stroke - occurs when a blood vessel in the brain becomes clogged or ruptures, leaving the brain with no oxygen, Heart Attack - happens when heart muscle cells die and part of the heart muscle is damaged, Heart Failure - happens when the heart cannot pump enough blood to meet the body's needs, Possible Risks of High Blood Pressure - heart attack, heart failure, kidney disease, and stroke, Purpose of the Cardiovascular System - transport gases and nutrients throughout the body, Type of Tissue that Makes Up the Heart - cardiac , Where the Exchange of Blood and Oxygen Take Place in the Lungs - Capillaries , When vessels are clogged with fat, the heart must work harder to push the blood through the body resulting in: - high blood pressure, Arteries divide into smaller blood vessels called: - capillaries , Fatty buildup in blood vessels is called: - atherosclerosis ,

Cardiovascular System

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