Direct Democracy: The Right of the People to Make Fools of Themselves; The Use and Abuse of Initiative and Referendum, a Local Government Perspective.. Seattle Law Review 19 (fall).
Listening to Your Heart. Your doctor will use a stethoscope to hear your heartbeat. The opening and closing of your heart's valves make a lub dub noise. The doctor can check your heart and valve health and hear your heart's rate and rhythm by listening to those sounds.
How your heart beats. To understand how a pacemaker works, it helps to know how your heart beats. The heart is a muscular, fist-sized pump with four chambers, two on the left side and two on the right. The upper chambers are the right and left atria. The lower chambers are the right and left ventricles.