The lungs are organs that are involved in respiration, a process of the respiratory system, which enables a human being to inhale oxygen and exhale carbon dioxide. The lungs also have involvement with the cardiovascular system, due to the body’s gas exchange between blood and oxygen.
The human body contains two lung pockets on either side of the chest, which are protected by the rib cage, a part of the skeletal system. The right lung is divided into three compartments (or lobes), while the left lung is divided into only two compartments, as a means of providing space for the heart.
The lungs are attached to the chest via a membrane lining known as pleura; fluid filled space separates the layers of the pleura membrane. Due to the lungs closed-off position inside the rib cage, they depend on the nose, mouth, esophagus, trachea, bronchi, and alveoli for the transportation of oxygen and carbon dioxide.
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