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Atrium

Biology Double Circulation

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Circulatory system
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Atrium
Heart
Ventricle
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Artery
Systole
Foramen of Panizza

DOUBLE CIRCULATION IN MAMMALS OBJECTIVE ? Describe how the structure of the heart supports its function (blood pressure, force of contraction) ? Describe the flow of blood to and from the heart via the associated blood vessels CARDIOVASCULAR SYSTEM heart?arteries?arterioles ? ? veins?venules?capillaries HUMAN HEART ? 4 chambers(2 upper chamber, 2 lower chamber) ? Upper chambers are called atria ? Lower chambers are called ventricle ? Right side of the heart is separated from the left by a septum. ? This prevents the mixing of deoxygenated blood and oxygenated blood. HUMAN HEART RIGHT SIDE OF THE HEART 1. Right atrium ? BLOOD LOW IN OXYGEN(HIGH IN CARBON DIOXIDE) FROM ALL PARTS OF THE BODY RETURNS TO THE ATRIUM

Biology Heart Dissection

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The heart ? Consist of 4 chambers ? Function : Pump oxygenated blood to all parts of the body and to remove waste such as carbon dioxide in the cells. External Anatomy External Anatomy L R Right Atrium External Anatomy L R Right Ventricl e External Anatomy L R Left Atrium External Anatomy L R Left Ventricle Internal Anatomy R L Right Atrium Internal Anatomy R L Right Ventricle Internal Anatomy R L Left Atrium Internal Anatomy R L Left Ventricle Direction of blood Deoxygenated blood from the body ? right atrium ? right ventricle The deoxygenated blood ?the lungs where gases exchange occurs. Carbon dioxide is removed and the blood is oxygenated. Oxygenated and nutrient
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