myocardium


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myocardium

the muscular tissue of the heart

Myocardium

 

the muscular layer that constitutes most of the heart. It consists of striated muscle tissue made up of a dense aggregation of muscle cells. A functional characteristic of the myocardium is rhythmic, automatic contraction alternating with relaxation, which continues without interruption throughout the life of the organism.

myocardium

[‚mī·ə′kärd·ē·əm]
(histology)
The muscular tissue of the heart wall.
References in periodicals archive ?
The question to be raised is how the renewal of a piece of myocardium follows the time line of picking up cell types in series: cardiomyocytes, endothelial cells, smooth muscle cells, fibroblast, pacemaker cells, conducting and Purkinje cells to bring the orchestration of rhythmically contracting and relaxing heart.
They now know that activating the cells' Wnt signaling pathway again allows cardiac progenitor cells to become epicardium cells, instead of myocardium cells.
In the present study, almost half of the study population showed Late Gadolinium Enhancement (LGE) denoting irreversibly scarred myocardium.
After administered to rats at a dosage of 200 mg/kg for 28 days before MI model, GBE significantly decreased the heart enzymes CK, AST and LDH in plasma and increased them in myocardium compared to the model group (P<0.
Stollberger and Finsterer refined the definition as >3 trabeculations protruding from the LV wall apical to the papillary muscles, perfused intertrabecular spaces, and atwolayered myocardium with the noncompacted layer usually thicker than the compacted myocardium in end-systole [21].
In fact all approved therapeutic approaches are palliative and designed to preserve the function of the surviving myocardium.
The histological pattern observed ranges from normal myocardium to acquired fibrotic changes superimposed on the background of normal myocardium.
Non-compaction of the myocardium was first described by Bellet et al.
Gamma camera imaging of myocardium perfusion with either TI-201 or Tc-99m is widely used for the detection of coronary artery disease (CAD).
A helical-shaped needle screws into the myocardium for delivery, and contrast delivered from the needle confirms engagement with targeted tissue.
Epimyocardium was further differentiated into myocardium and epicardium in 3.