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Circulatory System
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Endocardium
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Circulatory System -Known as the cardiovascular system -The transportation system of the body. -Consist of the heart, blood vessels, and the blood -Transports oxygen and nutrients to the body cells -Carries carbon dioxide and metabolic material away from the cell body.
Endocardium -Smooth layer of cells that line the inside of the heart -Continuous with the inside blood vessels -Allows for smooth flow of blood
Myocardium -thickest layer of heart -muscular middle layer -to protect the heart -to beat heart
Percardium -a doubled layered membrane -covers the outside of the heart -lubricating fluid, pericardial fluid, fills the space between the two layers. -to prevent friction damage to the membranes as the heart beats or contracts
Septum -a muscular wall that separates the heart into right side and left side. -prevent blood from moving between the right and left side of the heart.
Interatrial Septum -Upper part of the septum
Interventricular Septum -lower septum
How many parts of chamber? 4 chambers
Upper chambers called? Atria
Lower chambers called? Ventricles
Right atrium -receives blood as it returns from the body cells
Right ventricle -receives blood from the left atrium -pumps the blood into the pulmonary artery -which carries the blood to the lungs for oxygen.
Left atrium -receives oxygenated blood from the lungs
Left ventricle -receives blood from the left atrium -pumps the blood into the aorta for transport to the body cells
Tricuspid valve -located between the right atrium and the left ventricle -It close when the right ventricle contracts, allowing blood to flow to the lungs and prevent blood from flowing back into the right atrium.
Created by: yvonpham
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