
	3D Medical Animations Close This information is provided by an independent source. Merck & Co. does not endorse and is not responsible for the accuracy of the content, or for the practices or standards of non-Merck sources. This information provided is not intended to be a substitute for professional medical advice. A licensed healthcare professional should be consulted for diagnosis and treatment of any and all medical conditions. The manufacturer of a product generally has the most complete information about that product. How to use How to use The world's largest library of 3D medical animations developed and copyrighted by Blausen Medical Communications. The Human Atlas figures rotating model, labeled slides, and printable text in addition to animated videos. Shows a video of the selected health topic. Controls play, pause, and restart of the video. Shows a summary of the selected health topic. Controls to scroll the text. Shows a 3 D model of the video. Controls to rotate the model. Shows slides from the video. Controls to change slides.

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This information is provided by an independent source. Merck & Co., Inc. is not responsible for this content. Please discuss any and all treatment options with your healthcare professional. The manufacturer of a product generally has the most complete information about that product.

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atrium (a�tre-әm) pl. a�tria a chamber affording entrance, especially one of the upper chambers on either side of the heart, which receive blood from the body and transmit it to the ventricles.

Atria of the heart.

left atrium the upper chamber of the left side of the heart, which collects blood from the pulmonary veins and transmits it to the left ventricle.

right atrium the upper chamber of the right side of the heart, which collects blood from the upper and lower venae cavae and transmits it to the right ventricle.

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