MICROANATOMY

Detailed explanation-1: -The cells that create these rhythmic impulses, setting the pace for blood pumping, are called pacemaker cells, and they directly control the heart rate. They make up the cardiac pacemaker, that is, the natural pacemaker of the heart.

Detailed explanation-2: -It’s a small mass of specialized cells in the top of the right atrium (upper chamber of the heart). It produces the electrical impulses that cause your heart to beat. A chamber of the heart contracts when an electrical impulse or signal moves across it.

Detailed explanation-3: -Contractile cells and pacemaker cells are important in the overall functioning of the heart. Contractile cells are involved in muscular contractions in the process of pumping blood, while pacemaker cells are involved in creating rhythmic impulses that set the pace for the heart during the blood pumping process.

Detailed explanation-4: -The purpose of the electrical system of the heart is to coordinate the pumping of the four chambers of the heart and to control the heart rate so that the heart speeds up and slows down as the demands of the body change.