PHYSIOLOGY
CARDIAC MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A cardiac muscle is made by a dead piece of skin
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Cardiac muscle fibers also possess many mitochondria and myoglobin, as he cell is produced primarily through aerobic metabolism. Cardiac muscle fibers cells also are extensively branched and are connected to one another at their ends by intercalated discs.
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There were white out conditions in the town; subsequently, the roads were impassable
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The quick brown fox jumps over the lazy dog.
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Detailed explanation-1: -It is composed of individual cardiac muscle cells joined by intercalated discs, and encased by collagen fibers and other substances that form the extracellular matrix. Cardiac muscle contracts in a similar manner to skeletal muscle, although with some important differences.
Detailed explanation-2: -The individual cardiac muscle cell (cardiomyocyte) is a tubular structure composed of chains of myofibrils, which are rod-like units within the cell. The myofibrils consist of repeating sections of sarcomeres, which are the fundamental contractile units of the muscle cells.
Detailed explanation-3: -Intercalated discs connect cardiac muscle cells. Gap junctions inside the intercalated discs relay electrical impulses from one cardiac muscle cell to another. Desmosomes are other structures present within intercalated discs. These help hold cardiac muscle fibers together.
Detailed explanation-4: -Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control.