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      • The left atrium is located posteriorly, forming much of the base of the heart. It receives oxygenated blood from the lungs through the four pulmonary veins (two from each lung). Like the right atrium, the left atrium also has a muscular auricle. Blood flows from the left atrium into the left ventricle through the mitral valve.
      anatomy.co.uk/heart/

      Heart - Structure, Function, Anatomy, Location, Diagram

  2. anatomy.co.uk › left-atriumLeft atrium - Structure, Location, Function, Significance

    Mar 2, 2024 · The left atrium is located in the upper part of the heart, posterior to the right atrium and above the left ventricle. It occupies a central position in the thoracic cavity , lying slightly to the left of the midline.

  3. www.kenhub.com › anatomy › the-atria-of-the-heartHeart (right and left atrium): Anatomy and function | Kenhub

    Aug 17, 2023 · In the anatomical position, the left atrium is located between the 5th to 8th thoracic vertebrae if the individual is supine (lying flat) or the 6th to 9th vertebrae in someone who is standing erect. Also posteriorly related to the left atrium are the descending aorta, esophagus, and the previously described pulmonary veins.

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  5. www.healthline.com › human-body-maps › left-atriumLeft Atrium Function, Definition & Anatomy | Body Maps

    Jan 22, 2018 · The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to...

  6. anatomy.co.uk › heartHeart - Structure, Function, Anatomy, Location, Diagram

    Nov 10, 2024 · The heart is a four-chambered muscular organ with a complex structure that allows it to efficiently pump blood throughout the body. It is divided into two halves—the right and left sides—each responsible for different aspects of circulation. The heart consists of four chambers: the right atrium, right ventricle, left atrium, and left ventricle.

  7. en.wikipedia.org › wiki › Atrium_(heart)Atrium (heart) - Wikipedia

    The left atrium receives the oxygenated blood from the left and right pulmonary veins, which it pumps to the left ventricle (through the mitral valve (left atrioventricular valve) for pumping out through the aorta for systemic circulation.

  8. www.getbodysmart.com › heart-anatomy › heart-chambersThe four chambers of the heart and their functions

    Oct 25, 2022 · The superior chambers consist of the right atrium and left atrium (plural, atria: L., corridor). which lie primarily on the posterior side of the heart. [Interior view / Posterior view] Have you been making any of the common anatomy learning mistakes? Find out! The right and left atrium of the heart. 1. 2. 3. 4. 5. 6.

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  10. www.elsevier.com › left-atrium › 22898Left Atrium | Complete Anatomy - Elsevier

    The left atrium is approximately cube shaped and forms the base of the heart posteriorly. It has thicker muscular walls compared to the right atrium; however, the ventricular walls are significantly thicker.