Final answer:
The bell of the stethoscope can be used to listen to S3 and S4 heart sounds, in addition to S1 and S2 sounds. S3 may be heard in certain groups and can indicate congestive heart failure. S4 occurs prior to S1 and is associated with left ventricle failure.
Step-by-step explanation:
In a normal, healthy heart, the bell of the stethoscope can be used to listen to S3 and S4 heart sounds, in addition to the commonly heard S1 and S2 sounds. S3 is rarely heard in healthy individuals, but may be present in certain groups such as young people, athletes, and pregnant women.
It can also indicate congestive heart failure if heard later in life. S4 occurs prior to S1 and is associated with the contraction of the atria pushing blood into a stiff or hypertrophic ventricle, indicating left ventricle failure.