What mechanism primarily drives the process of inhalation?

What mechanism primarily drives the process of inhalation?

Step 1: Understand that inhalation is the process of taking air into the lungs.
Step 2: Know that the diaphragm is a muscle located at the bottom of the chest cavity.
Step 3: When you inhale, the diaphragm contracts (tightens) and moves downward.
Step 4: This contraction increases the space (volume) in the thoracic cavity (chest area).
Step 5: As the volume increases, the pressure inside the thoracic cavity decreases.
Step 6: The lower pressure allows air from outside to flow into the lungs.

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