What typically happens to the diaphragm during inhalation?

During inhalation, the diaphragm contracts and lowers. This contraction of the diaphragm, a dome-shaped muscle located at the base of the rib cage, is crucial because it creates a vacuum effect in the thoracic cavity. As the diaphragm flattens, the volume of the thoracic cavity increases, which reduces the pressure inside the cavity compared to the atmospheric pressure. This pressure difference causes air to flow into the lungs.

When the diaphragm lowers, it allows the lungs to expand further, facilitating the intake of oxygen-rich air. This process is essential for effective respiration and plays a significant role in ensuring that the body receives the oxygen necessary for various physiological functions. Understanding the mechanics of the diaphragm during inhalation is fundamental in fields such as respiratory therapy, emergency medicine, and any role involving airway management.