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Related Concept Videos

Overview of the Heart01:07

Overview of the Heart

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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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Conduction System of the Heart01:19

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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
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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.
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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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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.
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Conduction System of the Heart01:20

Conduction System of the Heart

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The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
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Related Experiment Video

Updated: Feb 9, 2026

Isolation of Endocardial and Coronary Endothelial Cells from the Ventricular Free Wall of the Rat Heart
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Isolation of Endocardial and Coronary Endothelial Cells from the Ventricular Free Wall of the Rat Heart

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Venular endothelial cells from bovine heart.

M E Schelling1, C J Meininger, J R Hawker

  • 1Department of Medical Physiology, Texas A&M University College of Medicine, College Station 77843.

The American Journal of Physiology
|June 11, 1988
PubMed
Summary

Researchers developed a method to isolate coronary venular endothelial cells for studying angiogenesis. Specific substrates like Matrigel significantly enhanced cell proliferation and supported vessel network formation.

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Area of Science:

  • Cardiovascular Biology
  • Endothelial Cell Biology
  • Angiogenesis Research

Background:

  • Coronary venular endothelial cells are crucial for microvascular function and angiogenesis.
  • Understanding their behavior in vitro is essential for studying coronary vascular diseases.

Purpose of the Study:

  • To establish culture conditions for coronary venular endothelial cells.
  • To investigate the effects of various substrates on cell proliferation and morphology.
  • To develop an in vitro model for studying coronary angiogenesis and transport.

Main Methods:

  • Isolation of coronary venular endothelial cells using a bead-perfusion technique.
  • Establishment of cell culture conditions in supplemented Dulbecco's modified Eagle's medium.
  • Assessment of cell proliferation on different substrates (Matrigel, gelatin, fibronectin).

Main Results:

  • Optimal culture conditions were established for microvascular cell growth.
  • Matrigel, gelatin, and fibronectin significantly supported high levels of endothelial cell proliferation.
  • A correlation was found between cell morphology (broad, flattened) and proliferation rates.

Conclusions:

  • Coronary venular endothelial cells can be cultured and characterized in vitro.
  • Substrate properties influence endothelial cell proliferation and morphology.
  • This in vitro model is valuable for studying coronary angiogenesis and endothelial transport mechanisms.