When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The circulatory system consists of three independent systems that work together: the heart ...

Your circulatory system works all day, every day, to pump oxygen throughout your body. There are cardiovascular conditions that can impact this system. Your circulatory system, also known as your ...

The cardiovascular system is made up of your heart and your blood vessels. This heart anatomy diagram shows that blood flows from the right atrium into the right ventricle and out to the lungs ...

The human heart and the miles of blood vessels that snake through the body are a wonder to behold. Made up of three independent components, the cardiovascular system functions best when these ...

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 ...

The muscular system can be broken down into three types ... the eyes make nearly 10,000 coordinated movements. The heart is the hardest-working muscle. It pumps out 2 ounces (57 grams) of blood ...