Answer:
pressure within the alveoli of the lungs
Explanation:
Pulmonary ventilation involves three different pressures:
Atmospheric pressure
Intra Alveolar (intrapulmonary) pressure
Intrapleural pressure
Atmospheric pressure is the pressure of the air that is exerted outside the body. Intrapulmonary pressure is the pressure exerted inside the alveoli of the lungs. Intrapleural pressure is the pressure within the pleural body cavity.
How organisms change through time
The mitotic spindle forms during pro-phase, and the centrosomes move to the opposite ends of the cell. The mitotic spindle has micro tubules that capture the chromosomes. While this process begins in prophase it continues over into metaphase.