During inhalation, what happens to the ribs?

During inhalation, the ribs expand and lift upward due to the action of the intercostal muscles, which are located between the ribs. When these muscles contract, they pull the ribs upward and outward. This movement increases the volume of the thoracic cavity, decreasing the pressure within the lungs and allowing air to flow in. This expansion is crucial for efficient breathing, as it enables more air to be taken into the lungs, enhancing gas exchange.

The action of lifting the ribs creates more space for the lungs to expand, contributing to the overall mechanics of inhalation and facilitating the vital process of respiration. This process is essential for maintaining adequate oxygen levels in the blood and removing carbon dioxide from the body.