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.
2017-03-13T16:58:30-04:00. Passive is when materials travel or move across some cell membranes that doesn't use cell energy. Active is the meaning of a movement that crosses across some cell membranes that requires the use of cell energy. Answer: The answer is that passive doesn't use cell energy but active uses cell energy.