What is the surface of a liquid called?
When liquid water is confined in a tube, its surface (meniscus) has a concave shape because water wets the surface and creeps up the side. When liquid mercury is confined in a tube, its surface (meniscus) has a convex shape because the cohesive forces in liquid mercury tend to draw it into a drop.
How does surface tension aid breathing?
Respiratory Failure The alveolar cells produce a specialized liquid, surfactant, that decreases the surface tension in the airways reducing the amount of energy required to expand the lungs. When surface tension increases, more force is needed to expand the lungs, increasing the WOB.
What prevents lungs from collapsing?
But two factors prevent the lungs from collapsing: surfactant and the intrapleural pressure. Surfactant is a surface-active lipoprotein complex formed by type II alveolar cells. The proteins and lipids that comprise surfactant have both a hydrophilic region and a hydrophobic region.
What happens if a collapsed lung does not inflate?
When air sacs become deflated because of atelectasis, they cannot inflate properly or take in enough air and oxygen. If enough of the lung is affected, your blood may not receive enough oxygen, which can cause health problems. Atelectasis often develops after surgery.
Can a collapsed lung heal on its own?
Symptoms usually include sudden chest pain and shortness of breath. On some occasions, a collapsed lung can be a life-threatening event. Treatment for a pneumothorax usually involves inserting a needle or chest tube between the ribs to remove the excess air. However, a small pneumothorax may heal on its own.
What makes a lung collapse?
A collapsed lung occurs when air escapes from the lung. The air then fills the space outside of the lung, between the lung and chest wall. This buildup of air puts pressure on the lung, so it cannot expand as much as it normally does when you take a breath. The medical name of this condition is pneumothorax.