Scientists are starting to understand more about the small heart muscle fibers that Da Vinci showed in his illustrations over ...

Our lungs are not identical. Our right lung has three lobes, and the left lung only two to make room for our heart. Lungs are ...

The right-hand side of the heart is responsible for pumping deoxygenated blood to the lungs. The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium ...