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.Know More
One primary function of the circulatory system is the transport of oxygen from the lungs to the cells. This is why the system has two basic parts: the pulmonary circulation, which takes blood to the lungs to pick up oxygen, and systemic circulation, which takes the oxygenated blood throughout the body. Along the way, the blood picks up nutrients, attacks diseases and gathers waste for eventual elimination.
Though some scientists separate the cardiovascular and the lymphatic systems, since both systems operate using the same biological pathways, many scientists categorize them together as the circulatory system. Although all vertebrates, such as mammals, birds and reptiles, as well as annelids and cephalopods, have closed circulatory systems, in which the blood travels through vessels to organs and back to the heart, other animals, such as mollusks, have open circulatory systems in which the blood bathes the organs directly. However, in both types of circulatory systems, the purpose is the same: to get nutrients to the cells and ferry waste away from the cells.Learn more about Human Anatomy
The respiratory system helps maintain homeostasis by regulating the intake of air into the body and by removing carbon dioxide from the blood, which in turn assists the circulatory system's function and many other operations in the body. Homeostasis is the overall equilibrium of the body's internal organs and functions. Without these internal systems being properly balanced it can lead to a number of issues in the human body, including death, depending on the severity of the imbalance.Full Answer >
According to the National Center for Biotechnology Information, the primary function of the circulatory system is to pass substances back and forth between blood and the body's tissues. The NCBL notes this system is also called the "cardiovascular system."Full Answer >
A double circulatory system refers to a system in which blood pumps through the heart twice during each trip around the body. The blood is first pumped into the lungs, where it becomes oxygenated, and is then pumped back into the heart, before it is finally pumped into the rest of the body. While most types of vertebrates have double circulatory systems, some have the more primitive single circulatory system.Full Answer >
According to About.com, the major functions of lymph nodes are to assist the body's immune system and to filter lymph. About.com explains that these masses of tissue and other lymphatic organs are essential in preventing the buildup of fluid in tissues, protecting the body against infections and regulating blood pressure and volume.Full Answer >