What function does the diaphragm serve in the body?

The diaphragm is a crucial muscle located beneath the lungs and is essential for the process of respiration. Its primary function during inhalation is to contract and move downward, increasing the thoracic cavity's volume and creating a negative pressure that allows air to be drawn into the lungs. During exhalation, the diaphragm relaxes and moves back to its resting position, helping to expel air from the lungs.

This process of contraction and relaxation is fundamental for breathing, making the diaphragm a key player in both inhalation and exhalation. It ensures that oxygen enters the body, which is vital for cellular processes, and that carbon dioxide, a waste product of metabolism, is expelled efficiently. Understanding the diaphragm's role in respiration highlights its importance in overall respiratory health and function.