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Cardiac muscle
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Cardiac muscle is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wal
Glanzstreifen
Glanzstreifen
414c Cardiacmuscle
414c Cardiacmuscle
Differently oriented cardiac muscle fibers.
Differently oriented cardiac muscle fibers.
Intercalated discs are part of the cardiac muscle cell sarcolemma and they contain gap junctions and desmosomes.
Intercalated discs are part of the cardiac muscle cell sarcolemma and they contain gap junctions and desmosomes.
Skeletal muscle
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Skeletal muscle is one of the three types of vertebrate muscle tissue, the others being cardiac muscle and smooth muscle. They are part of the musculoskeletal system, and typically are attached by ten
Cardiac muscle
…Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart. The cardiac muscle (myocardium…
Skeletal muscle includes muscle fibers, satellite cells endothelial cells, fibro-adipogenic progenitors, and associated pericytes.
Skeletal muscle includes muscle fibers, satellite cells endothelial cells, fibro-adipogenic progenitors, and associated pericytes.
ATPase staining of a muscle cross section. Type II fibers are dark, due to the alkaline pH of the preparation. In this example, the size of the type I
ATPase staining of a muscle cross section. Type II fibers are dark, due to the alkaline pH of the preparation. In this example, the size of the type II fibers is considerably less than the type I fibers due to denervation atrophy.
Diagram of sarcoplasmic reticulum with terminal cisternae and T-tubules
Diagram of sarcoplasmic reticulum with terminal cisternae and T-tubules
When a sarcomere contracts, the Z lines move closer together, and the I band becomes smaller. The A band stays the same width. At full contraction, th
When a sarcomere contracts, the Z lines move closer together, and the I band becomes smaller. The A band stays the same width. At full contraction, the thin and thick filaments overlap.