Search results
Results from the WOW.Com Content Network
All the provided labeled diagrams on cardiac muscle under a microscope might provide a clear idea. Now, you can easily identify the cardiac muscle fibers and cells from the microscope slide and differentiate them from skeletal and smooth muscles.
The cardiac muscle is an involuntary, striated muscle that is found in the myocardium, which is the muscle tissue of the heart and forms a thick middle layer between the outer epicardium layer and the inner endocardium layer.
Cardiac myocytes are joined together via intercalated discs, which coincide with Z lines. They appear as lines that transverse the muscle fibers perpendicularly when examined with a light microscope.
In cardiac muscle, intercalated discs connecting cardiomyocytes to the syncytium, a multinucleated muscle cell, to support the rapid spread of action potentials and the synchronized contraction of the myocardium.
Cardiac muscle does not contain cells equivalent to the satellite cells of skeletal muscle. The ultrastructure of cardiac muscle cells is seen in cross-section in EM 133 Cardiac Muscle and longitudinal section in EM 137 Cardiac Muscle by transmission electron microscopy.
Two cardiac muscle cell nuclei are indicated in the labelled image. Many more cardiac muscle cell nuclei are visible. In the connective tissue between cardiac muscle cells are nuclei of other cells such as fibroblasts and endothelial cells of capillaries.
Examine cardiac muscle in the heart myocardium (sample 1, sample 2), and sample 3. Identify fascicles , connective tissue layers, blood vessels, and fibers cut in multiple planes. Identify intercalated discs and distinguish these from striations.
Cardiac muscle tissue is made up of many interlocking cardiac muscle cells, or fibers, that give the tissue its properties. Each cardiac muscle fiber contains a single nucleus and is striated, or striped, because it appears to have light and dark bands when seen through a microscope.
Comprised of elongated cells with multiple nuclei, cardiac muscle tissue appears striated under the microscope. Yet, unlike other striated muscles in the body, cardiac muscle controls an involuntary action, similar to smooth muscle tissue.
Cardiac muscle. Cardiac muscle tissue, like skeletal muscle tissue, looks striated or striped. The bundles are branched, like a tree, but connected at both ends. Unlike skeletal muscle tissue, the contraction of cardiac muscle tissue is usually not under conscious control, so it is called involuntary. Smooth muscle