Atrium (heart) - Wikipedia
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.
Heart (right and left atrium): Anatomy and function | Kenhub
2023年8月17日 · 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.
Chambers of the Heart - Cleveland Clinic
2022年5月20日 · Your heart chambers are four hollow spaces within your heart. Your upper chambers are called your right atrium and left atrium. Your lower chambers are called your right ventricle and left ventricle.
Heart: Anatomy & Function - Cleveland Clinic
2024年1月26日 · You have two chambers on the top (atrium, plural atria) and two on the bottom (ventricles), one on each side of your heart. Right atrium: Two large veins deliver oxygen-poor blood to your right atrium.
Atrium | Chamber, Ventricle, Circulation | Britannica
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.
Chambers of the Heart - Atria - Ventricles - TeachMeAnatomy
2023年4月19日 · In this article we shall look at the anatomy of the chambers of the heart – their location, internal structure and clinical correlations. Access this feature with pro. The right atrium receives deoxygenated blood from the superior and inferior vena cavae, and from the …
Heart Anatomy: Diagram, Blood Flow and Functions - MedicineNet
The heart is composed of specialized cardiac muscle, and it is four-chambered, with a right atrium and ventricle, and an anatomically separate left atrium and ventricle. See a picture of Heart Detail and learn more about the health topic.
Anatomy of the human heart - Wikipedia
It is right and anterior to the left atrium. [9] . It consists of the venous component (or sina venarum), which is the main, smooth part of the right atrium (auricula or atrium proper).
How the Healthy Heart Works - American Heart Association
2018年5月14日 · Figure B below shows dark bluish blood, low in oxygen, flowing back to the heart after circulating through the body. It returns to the heart through veins and enters the right atrium. This chamber empties blood through the tricuspid valve (B) into the right ventricle.
The Heart | Circulatory Anatomy - Visible Body
The Atria Are the Heart’s Entryways for Blood. The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs. The right atrium receives deoxygenated blood returning from other parts of the body. Valves connect the atria to the ventricles, the lower chambers.