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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.

Development of the Heart

Development of the Heart

The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...

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Related Experiment Video

Updated: Jun 20, 2026

Using an Isolated Working Rat Heart Model to Test Donor Heart Preservation Strategies

Using an Isolated Working Rat Heart Model to Test Donor Heart Preservation Strategies

Published on: October 4, 2024

Saving hearts through basic research.

Ioan Ovidiu Sirbu¹, Petra Pandur

¹Institute for Biochemistry and Molecular Biology, University of Ulm, Ulm 89081, Germany.

Birth Defects Research. Part C, Embryo Today : Reviews

|September 15, 2009

Summary

Cardiovascular diseases remain a global health crisis, causing significant mortality. Advances in molecular medicine offer new cell-based therapies to combat heart disease and improve patient outcomes.

Area of Science:

Cardiovascular Medicine
Molecular Biology
Regenerative Medicine

Background:

Cardiovascular diseases (CVDs) are the primary cause of death globally.
CVDs contribute significantly to mortality, as seen in Germany.
Congenital heart defects are linked to stillbirths and spontaneous abortions.

Purpose of the Study:

To highlight the persistent global burden of cardiovascular diseases.
To underscore the importance of understanding molecular mechanisms in cardiac development.
To introduce cell-based therapeutic approaches for cardiovascular disease treatment.

Main Methods:

Review of molecular medicine and health care advances.
Analysis of epidemiological data on cardiovascular disease mortality.

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Exploration of basic research progress in cardiac fate determination.

Main Results:

Despite medical progress, cardiovascular diseases remain a leading cause of death worldwide.
Understanding of molecular mechanisms governing cardiac fate has significantly advanced.
Cell-based therapeutic strategies have been established for cardiovascular diseases.

Conclusions:

Continued research into molecular mechanisms is crucial for combating cardiovascular diseases.
Cell-based therapies hold promise for improving outcomes in cardiovascular disease patients.
Addressing the global impact of cardiovascular diseases requires integrated approaches in medicine and research.