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Related Concept Videos

Chambers of the Heart01:16

Chambers of the Heart

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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
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Coronary Circulation01:21

Coronary Circulation

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The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
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Anatomy of the Heart01:20

Anatomy of the Heart

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The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
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Anatomy of the Heart01:27

Anatomy of the Heart

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The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
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Overview of the Heart01:07

Overview of the Heart

14.7K
The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...
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Location and Orientation of the Heart01:13

Location and Orientation of the Heart

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The human heart, despite its modest size and weight, is an organ of remarkable strength and endurance. Roughly the size of a fist, the heart weighs between 250 and 350 grams and is nestled within the mediastinum, the medial cavity of the thorax. It extends obliquely for about 12 to 14 cm, resting on the superior surface of the diaphragm. The heart is positioned anterior to the vertebral column and posterior to the sternum, with two-thirds of its mass lying to the left of the midsternal line.
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Related Experiment Video

Updated: Mar 3, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

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Left Atrium: Still a Neglected Chamber?

Maria Chiara Todaro1, Bijoy K Khandheria2

  • 1Cardiology Unit, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy.

Journal of Cardiovascular Echography
|May 4, 2017
PubMed
Summary
This summary is machine-generated.

A comprehensive cardiovascular system relies on proper heart chamber interactions. Multimodality imaging is essential for accurately assessing left atrial function in various heart conditions.

Keywords:
Left atriummultimodality imagingspeckle tracking echocardiography

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Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Effective cardiovascular function depends on ventricular-vascular and ventricular-atrial interactions.
  • Left atrial dysfunction is implicated in prevalent cardiovascular diseases like heart failure, atrial fibrillation, and valvular heart disease.

Purpose of the Study:

  • To emphasize the necessity of a thorough anatomical and functional assessment of the left atrium.
  • To highlight the role of multimodality imaging in evaluating left atrial structure and function.

Main Methods:

  • Utilizing a multimodality imaging approach.
  • Incorporating two-dimensional and three-dimensional echocardiography.
  • Employing speckle tracking, cardiac computed tomography (CT), and cardiac magnetic resonance (CMR).

Main Results:

  • Multimodality imaging provides a comprehensive evaluation of the left atrium.
  • This approach allows for detailed anatomical and functional assessment.

Conclusions:

  • Accurate assessment of the left atrium is crucial for understanding and managing cardiovascular conditions.
  • A combination of advanced imaging techniques offers the most suitable method for evaluating left atrial anatomy and function.