It is a double system because blood enters the heart twice: first from the lungs and then from the rest of the body. Then, it can be said that human beings have a double, closed and complete circulatory system. In the case of double circulation systems, blood passes through the heart twice. In simple circulation systems, blood is pumped through the heart only once. The incomplete system is typical of reptiles.

Humans have a complete circulatory system. In contrast, in incomplete circulation systems, oxygenated blood is mixed with non-oxygenated blood. In complete circulation systems, both types of blood remain separate, unmixed. Inside the body circulates oxygenated blood and non-oxygenated blood. Humans have this type of circulation system. The closed circulation system is characteristic of larger vertebrate animals. Then, the organs are not flooded with blood from the outside, but the blood enters the organs through valves. On the other hand, the closed circulation system is more complex, because the blood always moves within the blood vessels intended for it. This system can be found in invertebrate organisms, such as mollusks and arthropods. That is, the blood does not always move along the same path and ends up covering the organs. Blood circulatory systems may be: Open or closedĪn open blood circulation system is one in which the blood is distributed directly to the organs through different ducts. Types of circulatory systemsīasically, there are three categories of blood circulation systems, and each has very specific characteristics. Not all beings have the same circulatory system: for example, the systems of invertebrate organisms are very different from the systems of vertebrate beings, because the functions of each individual necessitate a type of circulatory system.īefore explaining the types of blood circulation, mention should be made Different types of circulatory systems that exist So you can understand how the circulatory system, a base element to understand the different types of circulation that occur in the body. These types of circulation are characteristic of closed, double and complete circulatory systems characteristic of vertebrates.īefore detailing the characteristics of each type of blood circulation, it is important to understand the particularities of the different circulatory systems that exist in all organisms.Įach system has specific characteristics and is designed specifically for each species, according to their peculiarities. Instead, in the major or systemic bloodstream the blood is released from oxygen and transferred to all organs of the body, from the upper extremities to the lower extremities.īoth the minor and major blood circulation occur in the body, and are complementary processes, dependent on each other.

Broadly speaking, it can be said that the smaller or pulmonary blood circulation is the process through which the blood is oxygenated. Two exists Types of blood circulation : Minor or pulmonary, and major or systemic.

Simpleimage of blood circulation