What are the functions of the heart and blood vessels?

The heart is a muscular organ that pumps blood, and the system of pipes that transport blood is the vascular system. The cardiovascular system is a relatively important system, and the cardiovascular system is also a very important system. The system is a "closed" piping system consisting of the heart and blood vessels, which include arteries, veins, and capillaries. The heart is the organ that drives blood flow and is divided into four chambers. That is, the left and right atria, and the left and right ventricles. What are the functions of the heart and blood vessels? Let us learn about it from the following article.

The main function of the heart is to supply oxygen to the body and remove metabolic products (such as carbon dioxide, etc.) from the body.

The heart completes its function by collecting oxygen-poor blood from the body and pumping it into the lungs. After adequate gas exchange, the heart pumps oxygen-rich blood to tissues and organs throughout the body. Each heartbeat consists of a phase called diastole (when the heart chambers relax and fill with blood) and a phase called systole (when the heart chambers contract and pump blood out). The two atria contract and relax together, and the two ventricles contract and relax together, but the atria and ventricles move differently.

The rest of the circulatory system (cardiovascular system) consists of arteries, arterioles, capillaries, venules, and veins. Arteries are strong and flexible; they carry blood from the heart and are subject to the highest blood pressure (blood pressure). The elasticity of the arteries helps maintain blood pressure between heart beats. The muscular layer of the walls of smaller arteries and arterioles can adjust their diameter to increase or decrease blood flow to a certain area. Capillaries are very small and have extremely thin walls. They act as bridges between arteries and veins.

The capillary walls allow oxygen and nutrients from the blood to enter the tissues, while also allowing metabolic products from the tissues to enter the blood. The blood then flows through the venules, veins, and finally back to the heart. Because veins have thin walls and are generally larger in diameter than arteries, they transport the same volume of blood at a slower rate and at a lower pressure.

What are the functions of the heart and blood vessels? Through the detailed introduction of the above article, I believe you have gained a certain understanding. Dr. Jeffrey Frame, a professor of nutrition and registered dietitian at Murray State University in the United States, said that the most critical point of the heart disease diet is to reduce meat intake. Eat less high-fat foods such as fatty meat, cream, butter, and less high-cholesterol foods such as animal liver, brain and fish roe; eat more bean products. The lecithin and inorganic salts rich in soybeans help prevent and treat coronary heart disease.