The first thing you notice about Glenna Gordon’s book Diagram of the Heart is that it’s small. Small enough to fit in a coat pocket. It has a soft cover too. It is a design that purposefully mimics ...

The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center. The heart ...

Well, this is kind of a trick question. Your heart is actually a muscular organ. An organ is a group of tissues that work together to perform a specific function. In the case of your heart, this ...

As the central part of the circulatory system, the heart is responsible for pumping blood, supplying oxygen and nutrients, and removing metabolic waste such as carbon dioxide from all the tissues in ...

The four valves of the heart allow blood to flow through the heart in the right direction. The valves open or close each time the heart beats. Problems with the heart valves can lead to palpitations, ...