Which device is used by doctors to listen to heartbeats and breathing?

Stethoscope

Which actor provided the voice for the dragon Mushu in Disney's "Mulan"? In "Pirates of the Caribbean," what is the name of Will Turner’s father? Who is the main vampire love interest in the series "Twilight"? What flavor cheesecake do Chandler and Rachel repeatedly steal? What artist is known for his melting clocks painting 'The Persistence of Memory'?