Structure of a human heart. Computer artwork of a heart with the right ventricle (second chamber) removed, showing the inside of the left atrium (first chamber). Oxygenated blood (red) flows from the lungs through the pulmonary vein (red pipe, upper right) into the left atrium of the heart. It is then pumped through the mitral valve (yellow) into the left ventricle (behind). From here it is pumped out through the aorta (red pipe, upper centre) to the body. Deoxygenated blood (blue) returning from the body enters the right atrium (blue area, upper left) through the vena cava (blue pipe, upper left), passes into the right ventricle and is then pumped to the lungs through the pulmonary artery (not seen). The smaller blood vessels supply the...
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
Shop with Confidence (Fine Art America Return Policy)
Our return policy is very simple:
If you're not happy with a purchase that you made on FineArtAmerica.com, for any reason, you can return it to us within 30 days of the order date. As soon as it arrives, we'll issue a full refund for the entire purchase price. Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.