Those cells are nerve cells, the brain sends electrical pulses down and the electricity causes the heart to beat.
If you mean the heart, there are two pacemakers. One is in the SA Node and the secondary (and slower) back up pacemaker is in a AV Node.
The main specialized cells that make up the heart are cardiomyocytes responsible for contraction, pacemaker cells that generate electrical impulses, and conductive cells that help spread the electrical signals throughout the heart.
The SA (sinoatrial) node is a cluster of cells in the upper part of the right atrium (aka the right upper chamber of the heart).
The cells that make up the sinoatrial (SA) node, which acts as the heart's natural pacemaker, are located in the right atrium of the heart. The SA node generates electrical impulses that initiate each heartbeat by causing the heart muscle to contract.
sending out signals to make the heart muscles contract.
sending out signals to make the heart muscles contract.
They Are A Special Group Of Nerve Cells. Nerve Signals From The Brain Control The Pacemaker, Making It Go Faster Or Slower When Required. Specialist cells in the heart which have autorhythmicity.
pacemaker cells
Pacemaker
The SA node is the "pacemaker" of the heart. Cells in the SA node are called "pacemaker" cells and they direct the contraction rate of the entire heart by generating action potentials.
cardiac muscle
A pacemaker is a device inserted into the heart to regulate the heart beats or heart rate