<unk> , also known as lung sounds or breath sounds, refer to the specific sounds generated by the movement of air through the<unk>  system. These may be easily audible or identified through auscultation of the<unk>  system through the lung fields with a stethoscope as well as from the spectral characteristics of lung sounds. These include normal breath sounds and adventitious or "added" sounds such as crackles, wheezes, pleural friction rubs, stertor, and stridor. Description and classification of the sounds usually involve auscultation of the inspiratory and expiratory phases of the breath cycle, noting both the pitch (typically described as low (≤200hz), medium or high (≥400hz)) and intensity (soft, medium, loud or very loud) of the sounds heard.
Respiratory sounds
Mental state
Heart sounds
Breathing gas
Respiratory rate
Physical strength
Body shape
Pulse 