The film presents a detailed fluorographic study of the normal heart using venous catheterization, showcasing physiological data such as pressure and flow measurements. It illustrates blood flow ...

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 ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...