differentiate between open type and closed type circulation
Answers
Almost all multicellular organisms need a circulatory system to transport oxygen and nutrients through the body. Evolution has led to the existence of two types of circulatory systems namely:
Open circulatory system: primarily found in invertebrates. Here, the blood flows freely through cavities since there are no vessels to conduct the blood.
Closed circulatory system: is found in vertebrates and a few invertebrates like earthworms. This system has vessels that conduct blood throughout the body.
Difference Between Open and Closed Circulatory System
Open and Closed Circulatory System
The main difference between the open and closed circulatory system is the way blood flows in an organism. Blood can flow through vessels inside the body such as arteries and veins. This type of circulation is called closed circulation. Open circulation happens when there are no vessels to contain the blood and it flows freely through the cavities of the body.
Difference Between Open and Closed Circulatory System
Vertebrates and few a invertebrates have closed circulatory system. The open circulatory system, on the other hand, is most commonly seen in invertebrates such as cockroaches and crabs.
The other major difference between open and closed circulatory system are summarized below:
Open Circulatory System Closed Circulatory System
The hemolymph directly bathes the organs and tissues. The blood circulates within closed vessels.
The blood and interstitial fluid cannot be distinguished. Blood and interstitial fluid are distinct.
Present in molluscs and arthropods. Present in annelids and vertebrates.
Blood is pumped into the body cavity. Blood is pumped through the vessels by the heart.
Dorsal blood vessel present. Dorsal and ventral blood vessels present.
Capillary system is absent. Capillary system is present.
Blood is in direct contact with the surrounding tissues. Blood is not in direct contact with the tissues.
Nutrients are exchanged directly between blood and tissues. The nutrients are exchanged via tissue fluid.
No transport of gases. Gases are transported.
The fluid flowing in this system is called hemolymph. Fluid flowing in this system is called blood.
No respiratory pigments are present. Respiratory pigments are present.
The volume of blood cannot be controlled. The volume of blood can be controlled by the contraction and relaxation of blood vessels.
Blood flow is slow. Blood flow is rapid.
The open spaces are called sinuses and lacunae. Closed spaces involve arteries and veins.
Organisms with OCS: Snails, clams, cockroaches and spiders. Organisms with CCS: Humans, squids, cats, earthworms.
Answer:
1: Closed and open circulatory systems: (a) In closed circulatory systems, the heart pumps blood through vessels that are separate from the interstitial fluid of the body. ... In an open circulatory system, the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel.19
PLEASE MARK AS BRAINLIEST.