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THE HEART. A pump made of cardiac muscle that pushes blood to our cells . HEART. About the size of your fist Is a muscle that p umps by contracting and relaxing Pumps nutrient rich blood to body cells Receives Oxygen rich blood from the lungs and pumps it to the body cells
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THE HEART A pump made of cardiac muscle that pushes blood to our cells
HEART • About the size of your fist • Is a muscle thatpumps by contracting and relaxing • Pumps nutrient rich blood to body cells • Receives Oxygen rich blood from the lungs and pumps it to the body cells • Receives Oxygen poor blood from the body and pumps it to the Lungs. Oxygen poor blood contains carbon dioxide (CO2)
The Heart has 4 chambers • Right Atrium • Right Ventricle • Left Atrium • Left Ventricle
The Right and left are separated by • Septum – muscle that separates the right and left side of the heart
Blood flow through the Heart Right Atrium • Oxygen poor blood comes FROM the body and dumps into the Right Atrium
Right Ventricle • Oxygen poor blood leaves the right atrium and is pumped into the RIGHT VENTRICLE
Lungs to Left Atrium • After the RBC’s pick up oxygen from the lungs they go back to the heart. • The oxygen rich blood flows to the Left Atrium • It stays in the left atrium until the heart contracts and squeezes it into the ...
Left Ventricle! • The Left ventricle receives Oxygen rich blood from the Left Atrium. • Then the Left Atrium contracts and squeezes the oxygen rich blood out to the body
Blood Vessels that bring blood to the Heart and take it away from the Heart • Superior and Inferior Vena Cava – bring oxygen poor blood to the heart • Aorta brings blood to the Body • Pulmonary Veins – bring blood with oxygen from the lungs to the L. Atrium • Pulmonary Arteries – bring blood without oxygen to the lungs from the R. Ventricle