Respuesta :
Explanation:
Insects have an open circulatory system which lacks veins and arteries. The hemolymph flows freely through the body lubricating tissues and transporting wastes and nutrients. The hemolymph present in insects helps the heart pump it throughout its circulatory system.
Insects, like all other arthropods, have an open circulatory system which differs in both structure and function from the closed circulatory system found in humans and other vertebrates. In a closed system, blood is always contained within vessels (arteries, veins, capillaries, or the heart itself).