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well, first of all the left lung at a certain point in history compresses until its hard to breath and the right lung at this point expands. This is unatural.

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16y ago

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Which is true about intrapulmonary pressure and intrapleural pressure?

Intrapulmonary pressure is the pressure inside the lung alveoli, while intrapleural pressure is the pressure in the pleural cavity. During normal breathing, intrapleural pressure is lower than intrapulmonary pressure, creating a pressure gradient that helps keep the lungs inflated.


What pressure keeps lungs inflated?

Intrathoracic pressure


What is intrathoracic pressure?

Intrathoracic pressure is the pressure inside of the pleural cavity. It is also called intrapleural pressure and the normal pressure is called negative pressure.


When is intrapleural pressure most negative?

Intrapleural pressure is most negative at the completion of inspiration.


What pressures vary rhythmically with respiration?

Intrathoracic pressure, intrapleural pressure, and transmural pulmonary vascular pressure exhibit rhythmic variations with respiration. These variations are important for normal breathing mechanics and gas exchange in the lungs.


The pressure in the alveoli is known as ?

intrapleural pressure


How is intrapleural pressure maintained?

Intrapleural pressure is maintained by the opposing forces of the elastic recoil of the lung and chest wall. During inspiration, the diaphragm contracts and the intercostal muscles expand the thoracic cage, causing a decrease in intrapleural pressure. This negative pressure helps keep the lungs inflated.


When is the intrapleural pressure become positive?

Intrapleural pressure becomes positive during forced expiration or coughing when the muscles contract forcefully to increase the pressure within the thoracic cavity. This positive intrapleural pressure helps to push air out of the lungs.


Why is intrapleural pressure negative rather than positive?

Because the negative pressure is the major factor preventing the lungs from collapsing. If the intrapleural pressure became equal to atmospheric pressure the lungs would recoil and collapse.


If air enters the intrapleural space?

The lung will collapse (atelectasis) because the negative intrapleural pressure gradient that keeps the lung inflated has is now at equilibrium with atmospheric pressure.


How does intrapleural pressure change during quiet breath?

During quiet breathing, the intrapleural pressure decreases during inspiration as the diaphragm contracts and the thoracic cavity expands, leading to a decrease in pressure inside the lungs. During expiration, intrapleural pressure increases as the diaphragm relaxes and the thoracic cavity decreases in volume, causing an increase in pressure inside the lungs.


Is intrapleural pressure 4 mm Hg less than the pressure in the alveoli?

true.