For centuries, medical textbooks have taught that the human body relies on two major circulatory networks: the cardiovascular ...

Researchers studying tattoo ink accidentally stumbled upon evidence of a vast microscopic fluid network inside the human body ...

Exercise may do far more than strengthen the heart and muscles. New research suggests regular aerobic activity can physically reshape the nervous system that controls the heartbeat, altering key nerve ...

Coronary arteries are a vital part of the human heart, providing it with oxygen-rich blood so that it can work. By comparing the hearts of mammals, birds, reptiles, fish and frogs, a ...