Question

What does a normal finding indicate about the lungs?

1) The lungs have fully expanded and there is no drainage from the chest.
2) The lungs have partially expanded and there is no drainage from the chest.
3) The lungs have fully expanded and there is drainage from the chest.
4) The lungs have partially expanded and there is drainage from the chest.

Answer 1

A normal finding about the lungs indicates that they have fully expanded and there is no drainage from the chest. This means that the lungs are functioning properly and there are no abnormalities or excess fluid in the lungs.

Step-by-step explanation:

A normal finding about the lungs indicates that they have fully expanded and there is no drainage from the chest. This means that the lungs are functioning properly and there are no abnormalities or excess fluid in the lungs. The process of normal expiration is passive, meaning that energy is not required to push air out of the lungs. Instead, the elasticity of the lung tissue causes the lung to recoil, as the diaphragm and intercostal muscles relax following inspiration. In turn, the thoracic cavity and lungs decrease in volume, causing an increase in intrapulmonary pressure. The intrapulmonary pressure rises above atmospheric pressure, creating a pressure gradient that causes air to leave the lungs.