The human physique is made up of many different methods, organs and tissues. The system that is the most important to our well being is the cardiovascular system. It consists of two fundamental parts: the guts and the blood vessels. The guts pumps the blood by the physique by contracting and expanding. The blood vessels carry the blood from the center to all elements of the physique.
The blood vessels consist of arteries and veins. The arteries carry the oxygen wealthy blood away from the center to the cells within the body. The veins return the blood to the center.
The blood vessels are made up of layers of clean muscle cells and connective tissue. The innermost layer of the blood vessel is named the tunica intima. That is the place the endothelial cells line the partitions of the artery. The endothelial cells are the only part of the blood vessel wall that’s able to producing an anti-coagulant substance referred to as prostacyclin. Prostacyclin is a substance that prevents the blood from clotting. With out this substance, the blood would not be capable to stream via the artery.
When the blood vessel is injured or stretched, the endothelial cells lose their means to supply prostacyclin. This causes the blood to clot. When this occurs, the blood vessels are blocked. The result is a stroke. Strokes can even happen when the blood vessel wall becomes inflamed. This is called atherosclerosis. Atherosclerosis is brought on by the accumulation of cholesterol and different substances in the artery partitions. The result is a narrowing of the artery. This blocks the flow of blood to the brain and different vital organs. This is what causes a coronary heart assault.
Diseases of the blood vessels are known as vascular diseases. They embrace strokes, atherosclerosis, heart assaults, and peripheral vascular illness. Vascular illness is the main cause of demise within the United States.
The most common type of vascular illness is atherosclerosis. Atherosclerotic plaques are deposits of fatty materials and cholesterol on the inside of the artery partitions. These plaques could become giant sufficient to dam the circulate of blood. This causes a heart assault or a stroke. If the plaques break off and travel to the guts or mind, they might trigger a heart attack or a stroke.
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