The basic circulatory system of vertebrate animals, which are those with a backbone, consists of a heart, the blood and the arteries and system of blood vessels. The heart pumps the blood first to the arteries and then throughout the body via the system of blood vessels.Know More
The heart is a muscular pump organ with two upper chambers, called atria, where the blood enters. After passing through a valve, the blood then enters one of the two lower chambers, called ventricles. The muscles of the ventricle contract to send the blood out of the heart and into the arteries. About the size of a fist, the heart muscle is extraordinarily durable, pumping about 3 billion times throughout the average human lifespan.
The blood carries nutrients, oxygen, water and waste products to and from the cells and organs through the system of blood vessels that exist throughout the body, sometimes traveling thousands of miles. There are different types of blood vessels.
The beginning of the blood's journey through the body happens when the heart relaxes between beats and the blood flows from the atria to the ventricles from where the blood is pushedÂ into the large arteries and thenÂ on to the smaller arteries where it releases oxygen and nutrients. The blood, nowÂ low on oxygen, gets pushed into the veins and travels back to the heart.Â Once the blood goes back to the heart, it is oxygenated and the process begins again.Full Answer >
The three functions of the circulatory system include maintaining normal body temperature, helping the body fight disease and providing the ideal chemical balance for homeostasis. The circulatory system consists of the heart, arteries, veins and blood.Full Answer >
The main function of the circulatory system is to move blood and lymph through the body. Doing this transports nutrients and oxygen to the cells of the body and removes waste products such as carbon dioxide. The circulatory system is necessary to regulate temperature and pH balance and protect the body from diseases.Full Answer >
The heart is part of the cardiovascular system and works like a pump to move blood throughout the body. The cardiovascular system also consists of the veins, arteries and capillaries that route blood throughout the body, according to WebMD.Full Answer >