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Circulatory System

Circulatory System - Circulatory System Functions The...

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Circulatory System
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Functions The circulatory systems main function is to move materials. Examples: Oxygen-Carbon Dioxide, waste and nutrients.
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Pericardium Protective sac of connective tissue that surrounds the heart.
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Myocardium The muscle of the heart. * Thick * Strong
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Heart Beats Average: 72 times a minute.
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Atrium and Ventricles Atrium * Top side of the heart (2) Ventricles * Bottom side of the heart (2) They are separated by a wall called the septum.
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Heart
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Pulmonary Circulation * Takes place on the right side of the heart. * Pumps deoxygenated blood to the lungs to pick up oxygen.
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Systemic circulation Takes place on the left side of the heart. Oxygenated blood is pumped to the cells thru the aorta.
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Heartbeat When cardiac muscle contracts it does so as one single unit!! This is a heart beat.
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Sinoatrial Node Located in the right atrium. Pacemaker of the heart. Causes the wave of contractions in the atriums.
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Left Atrium Bundle of His Left Ventricle Left Bundle Branch Right Atrium Right Ventricle Right Bundle Branch Atroventricular (AV) Node Sinoatrial (SA) Node
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