What does the term 'inhale' refer to?

The term 'inhale' specifically refers to the process of breathing in, where air is drawn into the lungs through the nose or mouth. This process is essential for respiration, as it allows oxygen, which is vital for cellular functions in the body, to enter the bloodstream. When we inhale, our diaphragm and intercostal muscles contract, expanding the chest cavity and creating a negative pressure that pulls air into the lungs.

Inhalation is a critical part of the respiratory cycle, which also includes exhalation—the act of breathing out. The distinction between inhalation and exhalation is fundamental in understanding how breathing works, and the role of oxygen in sustaining life.