Take the D scale for example. Start on the D note at the second fret and move up the scale like this to the next D: If you play this same pattern up two frets (so the E is the first note you play), youâll have an E major scale. The same goes for any other pattern you can spot in these scale maps.
A pacemaker signals the heart to beat when the heartbeat is too slow or irregular. A pulse generator is a small metal case that contains electronic circuitry with a small computer and a battery that regulate the impulses sent to the heart.
A pacemaker is an electrical device. It is implanted under your skin to help manage irregular heartbeats called arrhythmias. Modern pacemakers consist of two parts. One part contains the battery and the electronics that controls your heartbeat. The other part is one or more leads, which send signals to your heart.