The Animal Circulatory System

There are two major classifications of living things, plants and animals, and all species that are under these two kingdoms are required to have proper functions of their body processes to survive. The most important in all of the body processes is the transport system, it is the one that is responsible for well being of all other body systems to function smoothly and properly by supplying nutrients for it to live.These organisms need to have the ability to transport particles such as molecules or ions, into the body of the organism and to move the said particles around inside the organism. They also need to be able to dispose of the unwanted substances from the body. This is required in order for organisms to be able to breathe, eat and maintain …show more content…
The heart is the most important part in any circulatory system. It provides the muscle power to transport the blood throughout the entire body, even to itself. There are arteries that supply the heart with blood, these are called coronary arteries.They are the bright red blood vessels in the heart. In a closed circulation system, animals possess hearts with distinct chambers. Fish have a two-chambered heart, the two cavities are called the atrium and the ventricle. Blood enters the heart through the atrium and then out through a ventricle. Amphibians and reptiles have a three-chambered heart that has two atria and one ventricle. Birds and mammals have a four chambered heart, two atria and two ventricles and heart valves in between heart chambers, which are flaps of tissue that prevents backward blood flow. An open circulatory system is found in arthropods and mollusks, open means that there are no vessels, so the blood is freely moving around in the animal’s body cavity or hemocoel. The heart forces out a blood-like substance into the hemocoel, and it goes around splashing all over the organs. The organs then all the sufficient nutrients in this process. In the hemocoel, blood and interstitial fluid is then combined into hemolymph. In arthropods, the heart is composed of a tube-like structure in an insect’s back and shrinks to move hemolymph from the butt to the head. In the abdomen, there are series of valves called ostia, which allow hemolymph to enter the heart and get pumped near the hemocoel. In mollusks, the hemolymph uses hemocyanin to carry oxygen. The oxygenated hemocyanin is blue. It is not part of any cell, it just hangs within the