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Anatomy of the Heart

Anatomy of the Heart

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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Related Experiment Video

Updated: Feb 8, 2026

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Published on: January 10, 2025

Reperfusing the myocardium - a damocles Sword.

V K Shah¹, K K Shalia²

¹Sir H.N. Reliance Foundation Hospital and Research Centre, Cardiology Dept. Mumbai 400 004, India.

Indian Heart Journal

|July 3, 2018

Summary

This summary is machine-generated.

Reperfusion injury (RI) causes significant myocardial damage after blood flow is restored to ischemic heart tissue. Current treatments are ineffective, necessitating novel therapeutic strategies to prevent this lethal reperfusion injury.

Keywords:

Aspiration thrombectomy Ischemic conditioning Microvascular obstruction Myocardial stunning No-reflow Pharmacological conditioning

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Last Updated: Feb 8, 2026

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Published on: January 10, 2025

Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography

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Published on: November 24, 2016

Evaluation of Coronary Flow Reserve After Myocardial Ischemia Reperfusion in Rats

Evaluation of Coronary Flow Reserve After Myocardial Ischemia Reperfusion in Rats

Published on: June 28, 2019

Area of Science:

Cardiology
Pathophysiology
Biomedical Research

Background:

Periodic ischemia can lead to myocardial injury upon reperfusion, known as lethal reperfusion injury (RI).
Experimental data indicates that reperfusion contributes significantly to tissue death, alongside ischemia.
This injury manifests as dysfunction in the myocardium, vasculature, or electrophysiology following blood flow restoration.

Purpose of the Study:

To highlight the challenges and limitations of current therapeutic modalities for managing ischemic myocardium.
To underscore the inadequacy of existing clinical trials in preventing reperfusion injury.
To emphasize the need for exploring novel approaches to combat lethal reperfusion injury.

Main Methods:

Review of experimental studies on myocardial injury following ischemia and reperfusion.
Analysis of the pathophysiology of reperfusion injury.
Evaluation of the outcomes of clinical trials for preventing reperfusion injury.

Main Results:

Reperfusion injury accounts for substantial myocardial damage, often equivalent to ischemic damage.
Existing treatments are inefficient in mitigating the effects of reperfusion injury.
Despite progress in understanding RI, clinical prevention strategies have largely failed.

Conclusions:

Reperfusion injury remains a critical clinical problem with limited effective interventions.
Current understanding and preclinical successes have not translated into successful clinical prevention of RI.
There is an urgent need for innovative therapeutic strategies to address lethal reperfusion injury.