Why a Chest Tube is Placed. A chest tube is placed for a variety of reasons. One reason, as you mentioned, is to help the lung re-inflate when someone has a collapsed lung, also known as a pneumothorax. In that circumstance, a chest tube is inserted along the side of the ribs to allow the lung to reinflate.
A. Osmosis is the passive movement of water from an area high in water concentration, across a semi-permeable membrane, to an area low in water concentration.
3 5 Motion of Water as Wave Passes Water in the crest of the wave move in the samedirection as the wave, but water in the trough move inthe opposite direction. 6 Waves are classified on the basis of: l Disturbing force l Free waves vs. forced waves l Restoring force l Wavelength Classifying Waves.