In this Article. In this Article. A solitary pulmonary nodule (SPN) is a single abnormality in the lung that is smaller than 3 cm in diameter. Generally, a pulmonary nodule must grow to at least 1 cm in diameter before it can be seen on a chest X-ray.
Osmosis is the scientific process of transferring fluid between molecules. When molecules move in and out of a cell to achieve the same concentration of something, like salt, on both sides, then osmosis is happening.
osmosis is the selective passage of solvent molecules through a semipermable membrane from a dilute solution to a more concentrated solution. why? an attempt to make the vapor pressure be equal on both sides of the membrane (a state of maximum entropy).