Question

how many types sounds produced by our hearts ​

Answer 1

Explanation:

In healthy adults, there are two normal heart sounds, often described as a lub and a dub (or dup), that occur in sequence with each heartbeat. These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the atrioventricular valves and semilunar valves, respectively.

Answer 2

The sound of a heartbeat is caused by the heart valves opening and closing as they pump blood. The heartbeat sounds a bit like lub-DUB, lub-DUB, lub-DUB. A triple rhythm in diastole is called a gallop and results from the presence of a S3, S4 or both.

These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the atrioventricular valves and semilunar valves, respectively.