Right Atrium - Location, Anatomy & Function - Human Anatomy | Kenhub

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The right atrium receives deoxygenated venous flow from the superior vena cava, the inferior vena cava, the coronary sinus and the anterior and smallest cardiac veins. It passes the blood to the right ventricle of the heart through the tricuspid valve, which has three cusps or leaflets, and is also known as the right atrioventricular valve.

The main anatomical features of the right atrium include the sinus venarum, which surrounds the openings of the superior and inferior vena cavae as well as the coronary sinus, which in turn are also major structures. The atrial walls are made up of pectinate muscles which form a pouch known as the right auricle. The crista terminalis separates the cardiac and smooth muscle layers of the atrial walls, while the interatrial septum divides the atria.

0:17 Functions of the right atrium
0:52 Anatomy of the right atrium
1:32 Pectinate muscles

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Read more on the atria of the heart in this article, including information about some of its related clincial disorders: https://khub.me/0fs1d

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