Explain Graphic illustration of the position of a cardiac pacemaker?
Explain Graphic illustration of the position of a cardiac pacemaker?
The transportation of blood in the body is the function of the human circulatory system, also called the cardiovascular system. The system consists of heart, blood, and blood vessels. The part of the circulatory system that is responsible for pumping the blood into the blood vessels and subsequently to all the body parts is the heart. The heart is a muscular organ located slightly toward the left side of the breastbone. The size of the heart is approximately equivalent to the size of fist. The heart is a four chambered structure that is responsible for pumping the blood into the arteries and veins of the cardiovascular system. The specialized cells of the heart include cardiomyocytes and pacemaker cells. The rhythm at which the heart is pumped is controlled by the pacemaker cells, whereas the cardiomyocytes are responsible for involuntary contraction of the heart. The pumped blood is circulated through the system of blood vessels to transport oxygen and nutrients to the cells, and removal of carbon dioxide and toxic metabolic waste from the cells.
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