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The myocardial cells are connected through tight junctions and gap junctions between the cell membranes of adjacent cells. The myocardium as a whole is covered by the pericardium on the outside and the endocardium on the inside.

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What type of muscle fibers are there?

You have three types of muscle fibers. 1) Skeletal muscle fibers. 2) Cardiac muscle fibers. 3) Smooth muscle fibers.


What carries cardiac impulses to the myocardium?

Cardiac impulses are carried to the myocardium via specialized muscle cells called Purkinje fibers. These fibers are part of the cardiac conduction system and help to transmit electrical signals rapidly and efficiently throughout the heart muscle.


What cells make up the myocardium?

The myocardium is composed of cardiomyocytes, which are specialized muscle cells that form the heart muscle tissue. These cells are responsible for contraction of the heart and pumping blood throughout the body.


What is the difference with muscle fiber and muscle tissue?

Muscle fibers are the individual, elongated cells that make up muscle tissue; they are responsible for the contraction and movement of muscles. Muscle tissue, on the other hand, is a collection of these muscle fibers grouped together, functioning as a whole to perform specific actions. There are three types of muscle tissue in the body: skeletal, cardiac, and smooth, each with distinct functions and characteristics. In summary, muscle fibers are the building blocks, while muscle tissue is the collective structure formed by these fibers.


What arrangement of cardiac muscle fibers make the heart efficient?

Cardiac muscle fibers are arranged in a crisscross pattern, allowing for efficient contraction and relaxation of the heart. This arrangement helps coordinate the pumping action of the heart and ensures effective blood flow throughout the body.