Cardiac muscle
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Cardiac muscle

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Cardiac muscle is a type of involuntary striated muscle found in the walls and histologic foundation of the heart, specifically the myocardium. Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle. The cells that comprise cardiac muscle are called cardiomyocytes and are sometimes seen as an intermediate between other types of muscle 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. In addition, cardiac muscle cells, like skeletal muscle cells, are multinuclear whereas smooth muscle cells are mononuclear.

Coordinated contraction of cardiac muscle cells in the heart propel blood forward 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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Getting the blues makes the heart stumble - MTBeurope Tweet this news
MTBeurope--This also stimulates -cardiac muscle- to contract when triggered by blue light, enabling control of heart activity on demand, just by exposing it to blue ... - Date : Mon, 11 Oct 2010 13:03:00 GMT+00:00
Researchers make stem cell therapy breakthrough - Taiwan Today Tweet this news
Taiwan Today---...- animals indicating that heart stem cell therapy can be used to reduce -cardiac muscle- cell damage and to form new cardiovascular vessels from stem cells. ... - Date : Wed, 13 Oct 2010 07:56:03 GMT+00:00
SANYO Introduces Industry's First Stand-Alone Cell Processing Work Station ... - Marketwire (press release) Tweet this news
Marketwire (press release)---...- regenerative organ development, and tissue regeneration such as skin, cartilage, alveolar bone, cornea, -cardiac muscle-, nerve, liver and pancreas. ... - Date : Wed, 20 Oct 2010 15:03:14 GMT+00:00
AVI BioPharma's Investigational Drug Candidate AVI-4658 Demonstrates Broadly ... - MarketWatch (press release) Tweet this news
MarketWatch (press release)--There was general stability in exploratory markers of patient clinical performance, including -cardiac-, pulmonary and -muscle- functional assessments. ... - Date : Fri, 15 Oct 2010 12:07:09 GMT+00:00
Study: Ultraendurance Competitors Experience No Cardiac Fatigue - Physical Therapy Products Tweet this news
Physical Therapy Products--If -cardiac muscle- were to respond in the same way as skeletal muscle, the expectation would be for lower contraction velocities after exercise. ... - Date : Tue, 12 Oct 2010 17:48:19 GMT+00:00
Reprogramming Cells - Journal of American Medical Association (subscription) Tweet this news
Journal of American Medical Association (subscription)---...- San Francisco, have discovered a molecular cocktail that enables fibroblasts to transform directly into -cardiac muscle- cells without first reverting to ... - Date : Tue, 05 Oct 2010 20:08:35 GMT+00:00

Histology: muscle tissue

Striated
muscle

Histology: muscle tissue

Striated
muscle
Striated
muscle
subgroup

Histology: muscle tissue

Striated
muscle
Striated
muscle
subgroup
Striated
muscle
subgroup |groupstyle=background-color: Linen |Skeletal
muscle |
General
Neuromuscular junction * Motor unit * Muscle spindle * Excitation-contraction coupling * Sliding filament mechanism

Anatomy of torso, cardiovascular system: heart (TA A12.1, GA 5.524)

General
Surfacebase * apex * grooves (coronary/atrioventricular, interatrial, anterior interventricula, posterior interventricular) * surfaces (sternocostal, diaphragmatic) * borders (right, left) * Openings of smallest cardiac veins
Internalatria (interatrial septum, musculi pectinati, sulcus terminalis) * ventricles (interventricular septum, trabeculae carneae, chordae tendineae, papillary muscle) * valves * cusps * Atrioventricular septum cardiac skeleton Intervenous tubercle
Chambers
Right heart(venae cavae, coronary sinus)right atrium (atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of inferior vena cava, valve of coronary sinus) → tricuspid valveright ventricle (conus arteriosus, moderator band/septomarginal trabecula) → pulmonary valve(pulmonary artery and pulmonary circulation)
Left heart(pulmonary veins)left atrium (atrial appendage) → mitral valveleft ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)
Layers
EndocardiumHeart valves
MyocardiumConduction system: Cardiac pacemaker * SA node * AV node * bundle of His * Purkinje fibers
Pericardial cavityPericardial sinus
Pericardiumfibrous pericardium (Sternopericardiac ligaments) * serous pericardium (epicardium/visceral layer) * Fold of the left vena cava



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