A hemocoel is a cavity or series of spaces between the organs of organisms with open circulatory systems, like most arthropods and mollusks. This is an article about the rock music band "Circulatory System" Arthropods are Animals belonging to the Phylum Arthropoda (from Greek ἄρθρον arthron, " Joint " Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 A combination of blood, lymph, and interstitial fluid called hemolymph circulates through the hemocoel. Blood is a specialized Bodily fluid that delivers necessary substances to the body's cells such as nutrients and oxygen—and transports Waste products The lymphatic system in Vertebrates is a network of conduits that carry a clear fluid called Lymph. Interstitial fluid (or tissue fluid) is a solution which bathes and surrounds the cells of multicellular animals Hemolymph or haemolymph is the Blood analogue used by all Arthropods and most Mollusks that have an Open circulatory system.
The term is also used to describe the space in the connective tissue compartment derived from the embryonic blastocoel with contributions from mesoderm, filled with blood. A blastocoel(e or blastocele (also called blastocyst cavity, cleavage cavity or segmentation cavity) is the Fluid -filled central A germ layer is a collection of cells formed during animal Embryogenesis.