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What is alveolar ventilation refers to?
Alveolar volume is lung capacity. Alveoli are the air sacs in the bronchioles. How much air the lungs hold during both inspiration and expiration is lung capacity which is alveolar volume. Hope this helps
Is Alveolar recoil lead to a decrease in intr-alveolar pressure?
NO
Explain the functional importance of the partial vacuum that exists in the intrapleural space?
If not present (and the intra-alveolar pressure equaled atmospheric pressure) the lungs would collapse.
What happens during inspiration and expiration?
makapungot
What is the result of inspiration and expiration?
This occurs within the respiratory system. During inpiration, the intercostal muscles contract, the diaphragm descends, and the rib cage rises. The thoracic cavity volume increases, stretching the lungs, and the intrapulmonary volume increases. This causes the intrapulmonary pressure to drop. Air flows into the lungs until the intrapulmonary pressure equals the atmospheric pressure. During expiration the intercostal muscles relax, the diaphragm rises, and the rib cage descends. The thoracic cavity volume decreases, causing the the lungs to recoil, and the intrapulmonary volume decreases. This causes the intrapulmonary pressure to rise, and the air flows out of the lungs until the intrapulmonary pressure equals the atmospheric pressure.
What happens to the Alveolar attachments in COPD?
•The normal airway is distended by alveolar attachments during expiration, allowing alveolar emptying and lung deflation. In COPD, these attachments are disrupted because of emphysema, thus contributing to airway closure during expiration, trapping gas in the alveoli and resulting in hyperinflation
What is the concept of equal pressure point?
Equal pressure point (EPP) is the point where Intrapleural pressure and Alveolar pressure are equal. This is similar to the Starling resistor concept in the lung. Instead of flow being determined by the difference between alveolar and mouth pressure- flow is determined by the difference between alveolar and Intrapleural pressure difference. In forced expiration, both intrapleural pressure and alveolar pressure will increase. However alveolar pressure will decrease along the length of the airway until a pressure of zero at the mouth, whereas intrapleural pressure will remain the same. Therefore there will be a point where intrapleural pressure will be equal and subsequently greater than alveolar pressure. If the EPP occurs in the larger cartilaginous airways, the airway remains open. However, if the EPP is in the smaller airways, it will collapse. Increasing the force of expiration does not overcome EPP since it will increase both alveolar and intrapleural pressure. Another interesting concept is that EPP moves distally as expiration progresses because as air leaves the alveolar unit, the pressure in the alveolar decreases hence the pressure in the airway decreases as well. EPP is the cause of dynamic airway compression.
What is alveolar ventilation refers to?
Alveolar volume is lung capacity. Alveoli are the air sacs in the bronchioles. How much air the lungs hold during both inspiration and expiration is lung capacity which is alveolar volume. Hope this helps
Expiration depends on what two factors?
Expiration depends on (1) the recoil of elastic fibers stretched during inspiration and (2) the inward pull of surface tension from the film of alveolar fluid.
Is Alveolar recoil lead to a decrease in intr-alveolar pressure?
NO
When is the intrapleural pressure become positive?
during forced expiration
What is also known as the intra-alveolar pressure?
Intra-alveolar pressure is also known as the machinal chain.
What is also known as the intra alveolar pressure?
Intra-alveolar pressure is also known as the machinal chain.
What pressures vary rhythmically with respiration?
both intrapleural pressure and intra-alveolar pressure.
Which component of the full denture fits over the alveolar ridge and surrounding gingival area?
The baseplate of the full denture fits over the alveolar ridge and surrounding gingival area. It provides support for the artificial teeth and helps distribute pressure evenly during chewing.
What is an alveolar rupture?
An alveolar rapture refers to a situation where the alveolus raptures as a result of increased trans alveolar pressure with less pressure in the adjacent intestinal space. The rapture is dangerous because the amount of pulmonary congestion or obstruction that prevents the expansion of the lung is immeasurable, thereby leaving no criteria for safe pressures.
When intrapulmonary pressure is above atmospheric pressure what is able to occur?
expiration
