blood vessels and heart, also including the arteries, capillaries, and veins. The human body contains two circulatory systems which are the pulmonary and systemic circulation. The pulmonary circulation is a short loop from the heart to the lungs and back over again. The systemic circulation sends the blood from the heart to the other parts of every human's body and back again.
The major organs of the cardiovascular system are the heart and all blood vessels in the human. The heart is the most vital organ of the human body that pumps blood throughout the entire body. The heart is composed of arteries and veins that serve as pipes to continue blood flow. They are considered blood vessels because they transport blood around the human body. Other blood vessels includes arterioles, venules, and capillaries. The cardiovascular system has four major roles in the human body. The cardiovascular system helps the human body maintain a constant body temperature. Also, this system prevents and protects the body from any type of blood loss or infections. The key role, however, is to help transport waste products, nutrients, and gases throughout the body. Lastly, the cardiovascular system helps to maintain fluid balance through the body. The cardiovascular system maintains homeostasis in innumerable ways. The most important example of how the cardiovascular system maintains homeostasis is the constant pumping and beating of the heart. Even if the heart were to stop pumping for over half a minute significant damage would be done to the body. Another very significant way the cardiovascular system maintains homeostasis is by sweating. As a way of reacting with heat, the body dilates all capillaries allowing heat from the blood to come off of the skin and allowing it to leave the body which is why humans sweat to lower body temperature. Also, when we exercise our heart rates jump because of the significant need of blood to the cells. When the heart pumps faster, more blood flows to the cells in need to help continue exercising.
There are three major structures associated with the circulatory system which are the capillaries, arteries, and veins.
Capillaries are very tiny blood vessels and are one cell thick. Capillaries are the sites of the transfer in oxygen and nutrients from the bloodstream to other tissues in the body. The arteries are strong tubes or vessels that carry blood from your heart to the rest of your body. Arteries transport blood containing oxygen and nutrients to smaller tubes called arterioles, which delivered blood to smaller vessels. Veins take the deoxygenated blood back to the heart. The functions of the circulatory system are respiration, nutrition, waste removal, and immunity. Respiration delivers oxygen to the cells and removing carbon dioxide from them and nutrition carries digested food substances to the cell of the body. Waste removal disposes waste products and poisons that would harm the body and immunity helps protects the body from disease. The circulatory system is a complex network of vessels and organs that is in charge of the hormones, flow of blood, nutrients, and oxygen and other gases to and from the cells. Without the circulatory system, the body could not function properly. The circulatory system maintains homeostasis in a number of ways. In times of need the blood vessels come together to direct the blood to wherever it is required in the body. Also, the circulatory system gets rid of all waste products away from areas where they could build up enough to be toxic and could be very unhealthy for the body. Another way is how blood carries every important nutrient to each part of the human body to help maintain a constant flow and supply to the whole body. Finally, it produces certain hormones in one organ of our bodies that may need to act in another part of the body and it delivers it to the right spot to maintain
homeostasis.
The circulatory system and cardiovascular system are composed of blood vessels and work together to keep the heart pumping. The majors blood vessels exists in both system to corroborate with another. Both systems come together to form one system in order to keep major organs functioning properly.