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

   en.wikipedia.org › wiki › Atrium_(heart)

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   The atrium (Latin: ātrium, lit. 'entry hall'; pl.: atria) is one of the two upper chambers in the heart that receives blood from the circulatory system. The blood in the atria is pumped into the heart ventricles through the atrioventricular mitral and tricuspid heart valves.

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

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   Aug 17, 2023 · Much like the wide, open architectural atrium that functions as receiving sites for incoming guests, the cardiac atrium is a pair of chambers situated at the upper part of the heart that receives systemic and pulmonary blood. The right atrium receives deoxygenated blood from the systemic circulation via the superior and inferior vena cava.

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   • Embryology: Week 3-8 of gestation

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4. my.clevelandclinic.org › health › bodyHeart: Anatomy & Function - Cleveland Clinic

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   • What Are The Parts of The Heart?
   • Where Is Your Heart located?
   • What Does Your Heart Look like?

   The parts of your heart are like the parts of a building. Your heart anatomy includes: 1. Walls. 2. Chambers that are like rooms. 3. Valvesthat open and close like doors to the rooms. 4. Blood vesselslike plumbing pipes that run through a building. 5. An electrical conduction systemlike electrical power that runs through a building.

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   Your heart is in the front of your chest. It sits slightly behind and to the left of your sternum (breastbone), which is in the middle of your chest. Your heart is slightly on the left side of your body. It sits between your right and left lungs. The left lung is slightly smaller to make room for the heart in your left chest. Your rib cage protects...

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   Your heart looks a little bit like an upside-down pyramid with rounded edges. Large blood vessels go into and out of your heart to bring blood into and away from your heart. They connect your heart to the rest of your body, which it supplies with blood and oxygen.

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5. my.clevelandclinic.org › health › bodyChambers of the Heart - Cleveland Clinic

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   The heart has four chambers called the right atrium, left atrium, right ventricle, and left ventricle. Your heart chambers manage your hearbeat and blood flow.

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     Anatomy of the Heart: Structures and Blood Flow [Cardiology Made Easy]

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     Atria of the heart

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     Understanding Your Heart Beat

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7. www.britannica.com › science › heartHeart | Structure, Function, Diagram, Anatomy, & Facts ...

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   Oct 31, 2024 · The heart cavity is divided down the middle into a right and a left heart, which in turn are subdivided into two chambers. The upper chamber is called an atrium (or auricle), and the lower chamber is called a ventricle .

   • Author: The Editors of Encyclopaedia Britannica

   • In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
   • The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
   • The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
   • The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...

8. www.britannica.com › science › atrium-heartAtrium | Chamber, Ventricle, Circulation | Britannica

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   atrium, in vertebrates and the higher invertebrates, heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart. Fishes have one atrium; amphibians, reptiles, birds, and mammals, two. In humans the atria are the two upper chambers of the heart.

9. www.thoughtco.com › atria-of-the-heart-anatomy-373232Atria of the Heart Function - ThoughtCo

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   Sep 2, 2021 · Atria are the upper chambers of the heart. They receive blood returning to the heart from other areas of the body and send blood to the ventricles.