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The Structure of the Cardiovascular System General introduction The Cardiovascular System • Also known as Made up of –The Heart –The Blood Vessels –The Blood The Heart • The heart is a muscular pump with thick walls • It is made up of a special muscle • It is divided up into 2 halves • Each half contracts rhythmically. • The right side sends deoxygenated blood to the lungs to get Oxygen. • The left side sends blood to the body. The Blood Vessels • The body has a range of blood vessels Arteries Arterioles Capillaries Venules Veins • They carry the blood around your body to the tissues and back to the heart The Blood • Blood carries the different materials around your body, Carries nutrients, hormones and all other essentials. • Blood cells make up about 45% of the blood volume. • The other 55% is plasma The Cardiovascular System • The major transport system in the body • Delivers Oxygen to the body tissues from the lungs Nutrients to the liver from the intestines • Removes Carbon Dioxide from the cells to the lungs, to be excreted Waste products from the liver to the kidneys. • Transports white blood cells, antibodies and hormones to different parts of the body.