Oxygen enters the body, and carbon dioxide leaves the body, via the _____.
Gas exchange with the atmosphere occurs across the alveoli of the lungs. Once oxygenated, the heart pumps the blood throughout the body. There are animals, such as earthworms that exchange gases via the skin - humans are not such an animal. Skin as an organ of the integumentary system.
Asked by Eugene Fenster · Last updated 2 months ago · 19.6K views