What are the cells in the heart called that generate their own electricity?pacemaker cellsvoltage cells

The cells in the heart that generate their own electricity are called pacemaker cells. These specialized cells are primarily located in the sinoatrial (SA) node, which is situated in the right atrium of the heart. Pacemaker cells are responsible for initiating and regulating the heartbeat by producing electrical impulses that stimulate the heart muscles to contract. This automaticity allows the heart to function independently of the nervous system, although the nervous system can influence the rate and strength of the heart's contractions.

In contrast, "voltage cells" is not a recognized term in the context of heart physiology. Therefore, the correct answer to your question is pacemaker cells.