The
heart is a muscular organ with four chambers, each of which play a crucial
role, and is pumping blood to circulate through the body. Almost all of us are
aware of the mechanism of action of the human heart and its importance to the
welfare of an individual. But unfortunately not many of us know the properties
of the heart muscle. In the human body there are three types of muscles,
including the heart muscle is one of them.
The
heart muscle is in the protective wall of the heart, particularly concentrated
in the myocardium. Maintaining optimal muscle strength is critical for normal
functioning of the heart. It requires an adequate supply of oxygen, causing a
change in the failure or the death of muscle cells. Any deviation in the
structure of the heart muscle focus on diseases that can be mild to severe.
Refer for a better understanding of the heart muscle, the following:
The
heart muscle cells
The
cells, heart muscle contained collectively known as cardiomyocytes. They
contain several phone numbers of mitochondria, aerobic respiration, can be
continuous in order. The subsidiary cells and randomly intertwined and
connected to a network. This gives strength to the walls of the heart greater
pressure withstand for repeated blood pump system.
The
uniqueness of the heart muscle
The
uniqueness of the heart in the fact that it is only in the heart and not in
other parts of the body. It is involuntary function, the function of the heart
muscle, or is controlled involuntarily. The unique properties of the myocardium
is the presence of branched cells. These cells are connected by intercalated
discs.
Pacemaker
cells of the heart muscle
In
addition to the cardiomyocytes of the heart muscle, there are some specialized
cells called pacemaker cells. You are responsible for triggering and
controlling heartbeat. Functionally, the pacemaker cells regulate the
electrical impulses of the heart, thus playing a direct role in maintaining the
heart rate.
Characteristic
of cardiac muscle
Of
heart muscle smooth characteristics with the other two muscles, namely the
nature and skeletal type. It looks like a reference to multinucleated cells and
the striated appearance. In view of the similarity with the smooth muscles that
assist both types of cardiac and smooth muscles of the core in the middle.
One
special note is the perfect coordination of the cells during contraction and
heart beat. Major cardiac muscle function is blood in the blood vessels for
circulating throughout the body. Get to that end, the heart muscle with oxygen
and nutrients from the coronary arteries.
The
contraction of the heart muscle
What
is special about the contraction of the heart muscle. Cardiac muscle cells are
responsible for the contraction of the heart walls, which is crucial for the
pumping of blood in the ventricle. Communication to the contraction of heart
muscle cells via intercalated discs that properly placed between the cells.
As you
can see, the properties of the myocardium differ in comparison to other types
of muscles. To be precise, its properties are intermediate in the skeletal
muscles and smooth. If you saw the heart muscle to an improved microscope, the
cells appear striated. This is arranged because of the protein filaments in a
specific way. It is found that heart muscle cells have a much lower rate of
regeneration. Currently, more studies are conducted to determine the
regenerative capacity of the heart muscle.
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