Lively and informative spreads, along with augmented reality technology, introduce readers to the human body. Beginning with essential building blocks of cells and DNA, charts, sidebars, diagrams, and ...

Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of ...

Skin can either be thin or thick. Thin skin covers most of the body and can vary in thinness, with the thinnest skin covering the eyelids. Thick skin is present on the soles of the feet and palms of ...