The heart is a complex organ that pumps blood throughout the body. It sits in the chest, slightly left of center, behind the breastbone, and between the lungs. A heart that is not healthy does not ...

The five vital organs in the human body are the brain, heart, lungs, kidneys, and liver. Other organs include the gallbladder, pancreas, and stomach. Organ systems, such as the nervous system ...

They'll listen to your heart and lungs and check for swelling in your legs and ankles and blueness in your lips or skin. Bloodwork. Blood tests can show if your body is getting enough oxygen.