Circulatory System of organs that are responsible for the transportation of hormones, gases, blood cells and also nutrients to the body cells and also from them. The aim of this is to ensure that you are able to maintain the right body temperature, keep away diseases and also in maintaining the required pH and homeostasis. This system consists of the network of blood distribution in the body, but others would also consider the lymphatic system, which distributes lymph, to be part and parcel of the general circulation system. This would thus mean that the circulatory system consists of the circulation of two types of fluid, blood and lymph.
Circulatory systems in different animals:
The circulatory system usually occurs in different variations in different types of animals.
For example, when it comes to the backboned animals, of which the humans are part, you would find that the circulatory system is classified to be closed. This means that the fluid for transport, the blood, is always in the blood vessels such as the veins, arteries and capillaries as it circulates. The blood does not move out of the vessels. In the case of some of the invertebrates, the circulatory system is said to be open, and this is because the blood does leave the blood vessels during circulation.
It would be important to note that there are animals that do not have a circulatory system, and also that the lymphatic system is of the open type.
The cardiovascular system is the term that is used to refer specifically to the circulation of blood, and when you are to put special focus on the human cardiovascular system, you would find it mainly consists of the heart, which pumps blood, and the blood vessels, which is the means through which the blood is circulated. The circulation of blood is also classified in two divisions: pulmonary circulation and systemic circulation. Pulmonary circulation is the part where the blood gets to be oxygenated, and this is when it goes through the lungs, while systemic circulation refers to the circulation loop where the blood that is now rich in oxygen is distributed to the other organs in the body.
There are certain facts that should be of interest when it comes to the circulatory system. For instance, the average adult has about five and a half liters of blood in his or her body. Also, the digestive system works hand in hand with the circulatory system in the sense that it gives the heart the nutrients it needs so as to keep pumping.
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