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.
If the heart is not beating properly, a pacemaker can be used to regulate the rhythm. A pacemaker sends an electrical impulse to the muscle of the heart telling it when to beat. If one of the chambers of the heart is working improperly, the pacemaker can be attached there, or to multiple chambers if necessary.