Inspiration Occurs When The ________ Is Less Than The ________.. Due to this, volume in the lungs increases and the pressure decreases. Inspiration occurs if the pressure within the lungs (intrapulmonary.
In inspiration, the air pressure in lungs is less. Includes the respiratory bronchioles and the terminal alveolar sacs. The pressure in the lungs is less than that of atmospheric pressure, so the air is drawn in and inspiration occurs.