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LOCATED BETWEEN THE LEFT VENTRICLE AND THE AORTA, THE LARGEST ARTERY IN THE BODY. IT CLOSEES WHEN THE LEFT VENTRICLE IS FINISHED CONTRACTING, ALLOWIING BLOOD FLOW INTO THE AORTA AND PREVENTING BLOOD FROOM FLOWING BACK INTO THE LEFT VENTRICLE

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ABNORMAL HEART RYTHYMS AND CAN BE MILD TO LIFE THREATNING.

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CARRY BLOOD AWAY FROM THE HEART. THE AORTA IS THE LARGEST ARTERY IN THE BODY

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THAT FLOWS THROUGH THE CIRCULATORY SYSTEM IS OFTEN CALLED A TISSUE BECAUSE IT CONTAINS MANY KINDS OF CELLS

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CONNECT ARTERIOLES WITH VENULES THE SMALLEST VEIN

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also known as the cardiovascular system is often referred to as the " transportation" system of the body. It consists of the heart, blood vessels, and blood. It transports oxygen and nutrients to the body cells and transports carbon dioxide and metabolic materials away from the body cells

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A BRIEF PERIOD OF REST

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A smooth layer inside the heart and is continuous with the inside of the blood vessels

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OR RED BLOOD CELLS ARE PRODUCED IN THE RED BONE MARROW AT A RATE OF ABOUUT ONE MILLION PER MINUTE

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A COMPLEX PROTEIN COMPOSED OF THE PROTEIN MOLECULE CALLED GLOBEN AND THE IRON COMPOUND CALLED HOME. CARRIES OCYGEN AND CARBON DDIOXIDE

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RECIVES OXYGENTATED BLOOD FROM THE PULMONARY VEINS

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RECIVES BLOOD FROM THE LEFT ATRIUM AND PUMPS BLOOD INTO THE AORTA FOR TRANSPORTATION TO THE BODY CELLS

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OR WHITE BLOOD CELLS ARE NOT AS NEMEROUS AS ARE EYTHROCYTES, THEY ARE FORMED IN THE BONE MARROW AND LYMPH TISSYE AND USUALLY LIVE ABOUT 3-9 DYAS.

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LOCATED BETWEEN THE LEFTT ATRIUM AND LEFT VENTRICLE. IT CLOSES WHEN THELEFT VENTRICLE IS CONTRACTING, ALLOWING BLOOD FLOW INTO THE AORTTA FOR TRANSPORT TO THE BODY AND PREVENTING BLOOD FROOM FLOWING BACK INTO THE LEFT ATRIUM

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the muscular and the thickest layer.

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A DOUBLE LAYRED MEMBRANE OR SAC THAT COVERS THE OUTSIDE OF THE HEART. LUBRICATING FLUID FILLS THE SPACE BETWEEN THE TWO LAYERS TO PREVENT FRICTION AND DAMAGE TO THE MEMBRANE AS THE HEART BEATS OR CONTRACTS.

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90 PERCENT WATER WITH MANY DISSOLVED ORR SUPENDED SUBSTANCES.

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LOCATED BETWEEN THE RIGHT VENTRICLE AND PULMONARY ARTERY, A BLOOD VESSEL THAT CARRIED BLOOD TO THE LUNGS. IT CLOSES WHEN THE RIGHT VENTRICAL HAS FINISHED CONTRACTING, PREVENTING BLOOD FROM FLOWING TO THE RIGHT VENTRICLE

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Receives blood as it returns from the blood cells

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RECIVES BLOOD FROM THE RIGHT ATRIUM AND PUMPS THE BLOOD INTO THE PULOMANARY ARTERY

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A MUSCULAR WALL THAT SEPERATES THE HEART INTO A RIGHT SIDE AND A LEFT SIDE. PREVENTS BLOOD FROM MOVING BETWEEN THE RIGHT AND LEFT SIDES OF THE HEART

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A PERIOD OF VENTRICLE CONTRACTION

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USUALLY DESCCRIBES AS FRAGMENRA OR PIECES OF CELLS BECAUSE THEY LACK NUCLEI

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LOCATED BETWEEN THE RIGHT ATRIUM AND THE RIGHT VENTRICLE. IT CLOSES WHEN THE RIGHT VENTRRICLE CONTRACTS LOWING BLOOD FLOW TO THE LUNGS AND PREVENTINF BLOOD FROM FLOWING BACK INTO THE RIGHT ATRIUM

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BLOOD VESSELS THAT CARRY BLOOD BACK TO THE HEART