Blood circulation system
Circulatory system is also called the cardiovascular system and it is comprised of the heart, blood vessels and blood. The heart is the most important organ in the circulatory system. It is divided into four chambers, two smaller upper chambers caller atria, and two lower bigger chambers called ventricles. Therefore, the heart is made of left atrium, right atrium, left ventricle and right ventricle. The main role of the heart is to pump the blood through the blood vessels, which form a vast network throughout the body, and the blood is important since it carries oxygen and nutrients to the cells and tissues.
Cardiovascular system can be divided into two sections: systemic and pulmonary circulation. In systemic circulation, the entire body is supplied with the blood except for the lungs. The arteries have the role to carry the blood rich in oxygen to the different parts in the body. On the other hand, veins have the role to bring the blood rich in carbon dioxide to the heart. In pulmonary circulation, the pulmonary arteries brings blood rich in carbon dioxide to the lungs, where it is replenished with oxygen, and then pulmonary veins carry the blood rich in oxygen to the heart. Since the cardiovascular system is essential for the survival, it is extremely important to maintain it healthy.
Causes of blood circulation problems
Blood circulation can be disrupted due to many reasons. It may happen that the blood vessels are blocked by the forming of the plaque on the walls. Thus, they become very narrow and the blood flow can become slow and difficult. Furthermore, the walls of the blood vessels may become very thin or dilate abnormally. The most common risk factors that can induce poor blood circulation are excessive consuming of alcohol and cigarettes, physical inactivity and unhealthy diet.
The most common warning signs of poor blood circulation are the pain in the chest and legs, headache, dizziness and faintness, as well as dementia. It is considered that obesity is one of the most frequent causes for the occurrence of the circulatory system disorders. The most common cardiovascular system disorders are coronary artery disease, hypertension or high blood pressure, stroke, heart attack and diabetes, as well as peripheral artery disease. All these diseases are caused due to the narrowed blood vessels that impair the normal blood flow. The narrowing of the blood vessels occurs because of the accumulation of the cholesterol and fats on the walls of the blood channels.