what is the type of circulatory system
Answers
Answer:
Types of Circulatory System
1. Open Circulatory System
2. Closed Circulatory System
Explanation:
1. Open Circulatory System - In the open circulatory system, blood flows from lacunae, large open spaces and through sinuses among the tissues. Blood comprises very low pressure in this system. They are usually found in higher invertebrates namely insects, prawns, etc. Tissues are in direct contact with the blood. Exchange of nutrients and gasses takes place between the tissue and the blood directly. The flow of blood cannot be stopped as it flows in open space. The respiratory pigment is present in the blood flowing through this system is dissolved in plasma. Red Blood Cells are not present.
2. Closed Circulatory System - The blood does not come in direct contact with tissue. Blood comprises very high pressure in this system. This circulatory system is found in molluscs, echinoderms and in all vertebrates. The respiratory pigment is present in the blood flowing through this system is found in Red Blood Cells. Closed Circulatory System is more efficient as the volume of blood can be regulated by the contraction and relaxation of the smooth muscles of the blood vessels.