What is the primary function of inhalation?

The primary function of inhalation is to bring oxygen into the lungs. During this process, the diaphragm and intercostal muscles contract, creating a negative pressure in the thoracic cavity that allows air to flow into the lungs. This influx of air is essential for gas exchange, where oxygen from the inhaled air is transferred to the blood and used by the body's cells for energy production. The exchange process also sets the stage for the removal of carbon dioxide, which is a waste product of metabolism, during exhalation. This highlights the critical role of inhalation in maintaining adequate oxygen levels in the body and supporting overall respiratory function.