Cardiology

Changes in blood flow tell heart cells to regenerate

Altered blood flow resulting from heart injury switches on a communication cascade that reprograms heart cells and leads to heart regeneration in zebrafish, says a new study in eLife.

Medical research

Cell-cell signals in developing heart

During late stages of heart development, interactions between the endocardium (the inner layer of cells) and the myocardium (the heart muscle) are known to be crucial. Signaling between these two cell layers during the earliest ...

Cardiology

Heart valve procedure safe for patients with common heart defect

A new analysis conducted by investigators at the Cedars-Sinai Smidt Heart Institute shows for the first time that patients with a common heart defect who undergo catheter-based valve replacement procedures have the same survival ...

Cardiology

Postcode lottery for UK heart failure patients

The UK is not consistently meeting recommended standards in heart failure care, according to a new survey presented at the British Cardiovascular Society Conference in Manchester today.

Cardiology

Breakthrough as heart patches set for human trials

Researchers funded by the British Heart Foundation (BHF) have shown that heart 'patches' grown in the lab are safe to move on to trials in people with hearts damaged after a heart attack, in research presented at the British ...

Cardiology

New imaging tool for diagnosing heart disease

An international team led by scientists from Lawson Health Research Institute and Cedars-Sinai Medical Center are the first to show that Magnetic Resonance Imaging (MRI) can be used to measure how the heart uses oxygen for ...

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Cardiac muscle

Cardiac muscle is a type of involuntary striated muscle found in the walls of the heart, specifically the myocardium. Cardiac muscle cells are known as cardiac myocytes (or cardiomyocytes). Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle. The cells that comprise cardiac muscle are sometimes seen as intermediate between these two other types in terms of appearance, structure, metabolism, excitation-coupling and mechanism of contraction. Cardiac muscle shares similarities with skeletal muscle with regard to its striated appearance and contraction, with both differing significantly from smooth muscle cells.

Coordinated contraction of cardiac muscle cells in the heart propel blood from the atria and ventricles to the blood vessels of the circulatory system. Cardiac muscle cells, like all tissues in the body, rely on an ample blood supply to deliver oxygen and nutrients and to remove waste products such as carbon dioxide. The coronary arteries fulfill this function.

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