A variety of breath sounds, including rales (crackles), rhonchi and wheezes heard on auscultation of the lungs denote different underlying pulmonary or bronhcial pathologies.

Breath sounds audio including each of the pathological types can be found here:

Got questions about auscultating the lungs? Ask them on the USMLE forum.

Other Medical Student Resources Include:

USMLE Prep

Medical Student Forum

Topics #adventitious breath sounds #breath sounds #lung sounds. #pulmonary