Excessive carbon dioxide in our cells is poisonous and must be eliminated quickly and efficiently. The two systems that work together to eliminate carbon dioxide and supply oxygen are the cardiovascular system and the respiratory system. The respiratory system is responsible for providing oxygen and eliminating carbon dioxide. The lungs are located in the chest cavity. They are divided into the right and left lung.
Normal lungs are soft, pink and spongy.
Lungs are made up of delicate elastic tissue that allows them to expand and recoil. The right lung is larger than the left, it has three divisions or lobes. The left lung has two divisions or lobes. The process of breathing consists of inspiration and expiration. When you take a breath, it is called inspiration.