How do animal circulation systems work? Video - How different animal circulation systems work In this video, learn how mammals, fish and insects' circulation systems move blood around their bodies.

The concentrations of dissolved oxygen in the ocean are determined by the interplay of the three-dimensional circulation and a wide range of ecosystem processes. The complexity of the marine ...

The circulatory system of most spiders consists of the heart, pericardium, arterial vascular system, the open venous system, and lung veins connecting book lungs to the pericardium. Several important ...

NEW ORLEANS — A newfound way of delivering oxygen in animal circulatory systems depends mostly on food sloshing back and forth in the guts. This discovery came in sea spiders, or pycnogonids ...