What are the organs involved in each types of circulatory?

There are two main types of circulatory systems: open and closed. In an open circulatory system, like that found in insects and some mollusks, organs such as the heart and hemolymph vessels deliver nutrients and oxygen directly to tissues, with hemolymph bathing the organs in a body cavity. In a closed circulatory system, like in humans and other vertebrates, organs include the heart, arteries, veins, and capillaries, which work together to circulate blood through a network, efficiently delivering oxygen and nutrients to cells while removing waste products.