human
I've heard that some people use a stethoscope to check their babies' heartbeats. How does it work?
assistant
A stethoscope is a device for listening to the sounds of a person’s body. It consists of a pair of earpieces, a tube, and a bell. The earpieces are placed on the ears of the listener, while the bell is placed over the area being listened to. When the doctor or nurse listens with the stethoscope, they can hear the sound of the heart beating.