Cardiac muscle
hideCardiac 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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News tagged with heart muscle
Scientists grow mice heart muscle strip that beats
Oct 15, 2009 |
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(PhysOrg.com) -- Scientists have grown a piece of heart muscle - and then watched it beat - by using stem cells from a mouse embryo, a big step toward one day repairing damage from heart attacks.
Afib triggered by a cell that resembles a pigment-producing skin cell
Oct 12, 2009 |
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The source and mechanisms underlying the abnormal heart beats that initiate atrial fibrillation (Afib), the most common type of abnormal heart beat, have not been well determined. However, a group of researchers at the University ...
New strategy for mending broken hearts?
Oct 11, 2009 |
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(PhysOrg.com) -- By mimicking the way embryonic stem cells develop into heart muscle in a lab, Duke University bioengineers believe they have taken an important first step toward growing a living "heart patch" ...
Major improvements made in engineering heart repair patches from stem cells (w/ Video)
Oct 07, 2009 |
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University of Washington (UW) researchers have succeeded in engineering human tissue patches free of some problems that have stymied stem-cell repair for damaged hearts.
No major role for fish in the prevention of heart failure
Sep 30, 2009 |
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'No major role for fish' in the prevention of heart failure; only a possible beneficial effect in those with diabetes
Finding Better Ways to Diagnose Heart Attacks
Sep 25, 2009 |
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(PhysOrg.com) -- UA biochemistry researchers apply Nobel Prize technology to develop better diagnostics for heart attacks. Their work also could help predict individual risks of heart disease.
Viagra relatives may shrink abnormally large hearts
Sep 24, 2009 |
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Compounds related to Viagra, which is already in clinical trials to prevent heart failure, may also counter the disease in a different way, according to a study published online today in the journal Circulation Research. The re ...
Two treatment innovations improve heart function after heart attack
Sep 15, 2009 |
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Supersaturated oxygen (SSO2) administered during catheter-based treatments for heart attack can significantly reduce heart muscle damage, according to a new study reported in Circulation: Cardiovascular Interventions, a jour ...
Comprehensive cardiac CT scan may give clearer picture of significant heart disease
Sep 15, 2009 |
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A team of researchers led by Massachusetts General Hospital (MGH) radiologists has developed a computed-tomography-based protocol that identifies both narrowing of coronary arteries and areas of myocardial ischemia - restricted ...
Immediate intervention for patients with ACS not always more beneficial
Sep 01, 2009 |
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For some patients with acute coronary syndromes, the strategy of immediate intervention at a medical center does not appear to result in differences in outcomes in comparison with an intervention performed the next working ...
The benefits of reperfusion therapy
Sep 01, 2009 |
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The wider use of reperfusion therapy in patients with heart attack (AMI) can save millions of lives in Europe. Effective reperfusion therapy in an AMI patient can cut the individual risk of dying by half. AMI is caused by ...
New drug may reduce heart attack damage
Jul 24, 2009 |
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A novel drug that targets a master disease-causing gene can dramatically reduce heart muscle damage after a heart attack and may lead to significantly improved patient outcomes, researchers at the University of New South ...
Stem cells not the only way to fix a broken heart
Jul 23, 2009 |
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Researchers appear to have a new way to fix a broken heart. They have devised a method to coax heart muscle cells into reentering the cell cycle, allowing the differentiated adult cells to divide and regenerate healthy heart ...
Heart disease: Research off the beating patch
Jul 21, 2009 |
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It is an amazing sight: What looks like a tiny beating heart is actually a piece of synthetic, gauze-like mesh, barely the size of a fingernail, floating in a Petri dish. And yet it keeps squeezing away, nice ...
Induced pluripotent stem cells repair heart, study shows
Jul 20, 2009 |
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In a proof-of-concept study, Mayo Clinic investigators have demonstrated that induced pluripotent stem (iPS) cells can be used to treat heart disease. iPS cells are stem cells converted from adult cells. In this study, the ...
