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Intrathoracic pressure
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∙ 15y ago
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What is Intrapulmonary pressure?
The intrapulmonary pressure is the pressure in the alveoli. Intrapulmonary pressure rises and falls with the phases of breathing, but it ALWAYS eventually equalizes with the atmospheric pressure.
What keeps the alveolar inflated?
1) Surfactant keeps it from collapsing completely, but 2) Air pressure inflates it beyond the minimum (the lower pressure around it is developed by the chest wall & the diaphragm.)
What keeps the lungs from collapsing when the airways are open to the atmosphere?
Transpulmonary pressure
Which property of air keeps a beach ball inflated?
The type of air that keeps a beach ball inflated is kinetic energy.
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.
Is it true the pressure inside the human chest cavity is always positive so the lungs stay relatively inflated even upon exhaustion?
False
What does Lung fields hyper inflated means?
Hyper means over normal. Inflated means blown up. The lungs are over-inflated.
When a tire is under inflated what part of the tire grips the road?
When a tire is properly inflated it will be level to the ground. Over inflated and the middle of the tire has the most pressure on the ground. Under inflated and the sides of the tire have the most pressure on the ground.
Why do you need to pinch a person's nose while performing CPR?
This prevents the air you are trying to get into them from leaving through the nose, and helps keep enough pressure going into the lungs to get them inflated.
Why are a fetal pig's lungs collapsed?
The pig has not yet used the lungs to breathe, so therefore they lungs have not been inflated and filled with air.
How carry the lungs?
Our lungs are surrounded by bones and it keeps the lungs in place.
How do you know when a car tire is under inflated?
you can try to tell by gripping it, if it is firm then it is fully inflated. if it is kind of squishy, then it is under inflated. With a pressure gauge.
