Nanomaterials, the current darlings of industry, are showing up in products ranging from cosmetics to electronics. However, new animal studies indicate that inhaling these microscopic spheres and ...

The respiratory system allows air to reach the lungs, from which oxygen enters the blood and circulates to all body cells. This system also removes waste gases from the body and helps prevent disease ...

Board book including cut-outs and overlapping transparencies. Transparencies depicting the organs of the human body are accompanied by a text introducing the skin, muscles, skeleton, lungs, ...

Your circulatory system works all day, every day, to pump oxygen throughout your body. There are cardiovascular conditions that can impact this system. Your circulatory system, also known as your ...