Sputum cytology involves the microscopic examination of phlegm that is coughed up from the lungs.
Tiny hair-like projections on the surface of these passageways slowly sweep the mucus along, out of the lungs and up the trachea to the back of the throat, where it may be swallowed or coughed up.
Sputum-The substance that is coughed up from the lungs and spit out through the mouth.
Postural drainage uses the force of gravity to assist in effectively draining secretions from the smaller airways into the central airway where they can either be coughed up or suctioned out.
Postural drainage-The use of positioning to drain secretions from the bronchial tubes and lungs into the trachea or windpipe where they can either be coughed up or suctioned out.
