What happens to the diaphragm when you breathe in?

When you breathe in, the diaphragm plays a crucial role in the process of ventilation. It contracts, moving downward and increasing the volume of the thoracic cavity. This action creates a negative pressure, allowing air to flow into the lungs. The contraction of the diaphragm is essential for inhalation, as it facilitates the intake of oxygen-rich air.

While the diaphragm does indeed relax during exhalation, the focus of the question is specifically on inhalation, where the contraction is the significant action. The diaphragm does not remain still during breathing; it actively participates by contracting and contributing to the breathing process.

Understanding this mechanism is fundamental to grasping how the respiratory system functions, particularly the role of the diaphragm in facilitating efficient breathing.