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Internal & External sturcture of the Heart

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Agustin Campion

on 3 July 2015

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Transcript of Internal & External sturcture of the Heart

Internal & External sturcture of the Heart
Internal view
different structures of Heart
External view
Right Atrium: The upper right chamber of the heart. During the normal cardiac cycle, the right atrium receives deoxygenated blood from the body.Once both atria are full, they contract, and the deoxygenated blood from the right atrium flows into the right ventricle through the open tricuspid valve.
Left Atrium: the left atrium receives oxygenated blood from the lungs through the pulmonary veins. Once both atria are full, they contract, and the oxygenated blood from the left atrium flows into the left ventricle through the open mitral valve.
Superior and inferior Vena Cava: One of the two main veins bringing deoxygenated blood from the body to the heart.
Aorta: The central conduit from the heart to the body, the aorta carries oxygenated blood from the left ventricle to the various parts of the body as the left ventricle contracts.
Atrial septum: The wall between the two upper chambers (the right and left atrium) of the heart.
Pulmonary trunk: A vessel that conveys deoxygenated blood from the right ventricle of the heart to the right and left pulmonary arteries, which proceed to the lungs.
Pulmonary veins: The vessels that transport oxygenated blood from the lungs to the left atrium.
Pulmonary Valve: One of the four one-way valves that keep blood moving properly through the various chambers of the heart.
Aortic Valve: One of the four one-way valves that keep blood moving properly throug the various chambers of the heart.
Mitral Value: One of the four one-way valves that keep blood moving properly through he various chambers of the heart. The mitral valve separates the left atrium from the left ventricle.
Tricuspid Valve: One of the four one-way valves that keep blood moving properly through the various chambers of the heart. Located between the right atrium and the right ventricle, the tricuspid valve is the first valve that blood encounters as it enters the heart.
Atria: The two upper cardiac chambers that collect blood entering the heart and send it to the ventricles.
Ventricles: The two lower cardiac chambers that collect blood from the upper chambers (atria) and pump it out of the heart. Because the ventricles pump blood away from the heart, they have thicker walls than the atria so that they can withstand the associated higher blood pressures.




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