The typical 'Lubb-Dup' sounds heard in the heartbeat of a healthy person are due to:

When the heart of a frog is removed from the body,it continues to beat for some time. Select the correct statement$(s)$ from the following:
$(i)$ The frog is a cold-blooded animal.
$(ii)$ The frog does not have a heart-based circulatory system.
$(iii)$ The heart has myogenic properties.
$(iv)$ The heart is self-excitable.

The heart of a healthy man beats normally per minute:

Bradycardia indicates slow heart rate, generally below . . . . . . per minute. (in $beats$)

The heartbeat of a human is heard on the left side because:

The $lubb$ and $dubb$ heart sounds are produced due to: