What is the function of the diaphragm?

The diaphragm plays a crucial role in the respiratory system by assisting with the process of breathing. It is a dome-shaped muscle situated at the base of the thoracic cavity, separating the abdomen from the chest. When the diaphragm contracts, it moves downward, creating a negative pressure in the chest cavity. This pressure drop allows air to be drawn into the lungs, facilitating inhalation. Conversely, when the diaphragm relaxes, it moves back to its original position, which helps push air out of the lungs, enabling exhalation.

Understanding the diaphragm's primary function underscores its importance in the overall mechanics of breathing, making it essential for efficient respiratory function and oxygen exchange in the body.