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What is Left Atrium mean?
The atrium (Latin: ātrium, lit. 'entry hall') or auricle is the upper chamber through which blood enters the ventricles of the heart. There are two atria in the human heart – the left atrium receives blood from the pulmonary (lung) circulation, and the right atrium receives blood from the venae cavae (venous circulation). The atria receive blood while relaxed (diastole), then contract (systole) to move blood to the ventricles. All animals with a closed circulatory system have at least one atrium. Humans have two atria.
Formerly, the atrium was called the ‘auricle’. That term is still used to describe this chamber in some other animals, such as the Mollusca. They have thicker muscular walls than the atria do.
referencePosted on 01 Oct 2024, this text provides information on Miscellaneous in Medical related to Medical. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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