IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Chart of human respiratory and ...

Veins are a type of blood vessel that return deoxygenated blood from your organs back to your heart. These are different from your arteries, which deliver oxygenated blood from your heart to the rest ...

Atrial fibrillation is the irregular and rapid activation of the atria. It is caused by uncoordinated electrical stimulation of the atrial muscle. Atrial fibrillation may be classified as paroxysmal, ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope with ...