The Anatomy of the Heartbeat
The rhythm of life: grasping heart pulsation Heartbeat
The pulse is controlled by the sinoatrial (SA) point, a little cluster of units in the right chamber that serves as the heart’s innate pacemaker. The SA node sends electric signals to the atrioventricular (AV) junction, which then relays the impulses to the pumps, forcing them to contract. The Anatomy of the Heartbeat The rhythm of
The Structure of the Heartbeat