Question

fill in the blank question
breathing in is called , and breathing out is called .
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Explanation:

In the context of respiratory physiology, the act of taking air into the lungs (breathing in) is defined as inhalation. This process involves the contraction of the diaphragm and intercostal muscles, expanding the thoracic cavity and drawing air in. Conversely, breathing out (expelling air from the lungs) is called exhalation. During exhalation, the diaphragm and intercostal muscles relax, reducing the volume of the thoracic cavity and forcing air out. These terms are fundamental in understanding the mechanics of respiration.

Answer:

Breathing in is called inhalation, and breathing out is called exhalation.