It is made up of several different parts, including a sinoatrial (sinus) node. The sinus node is a small collection of tissue. It can be found in the heart's upper right chamber. The sinus node ...

So, your heart has a tiny group of cells known as the sinoatrial node that is responsible for coordinating heart beat rate across your heart. It starts each heartbeat and sets the heartbeat pace ...

The study may provide new answers to the question of how the heart pacemaker -- the sinoatrial node -- is regulated. New research in the Journal of General Physiology helps explain how the body's ...

The sinoatrial (SA) node is the natural pacemaker of the heart. It generates electrical impulses that cause the heart’s chambers to contract, setting the heart rate. The SA node typically ...

of which there are billions in the human heart, into specialized sinoatrial node cells which number only in the thousands," said lead researcher Edwardo Marban, director of the Cedars-Sinai Heart ...

Sinoatrial exit block occurs when the action potential initiated by the sinoatrial node is inhibited or completely blocked before it is able to leave the SA node and reach the atrium, and thus no ...

Junctional rhythms are usually the result of damage to your heart’s primary pacemaker, in the sinoatrial node in the upper back wall of the right atrium. This damage causes your heart to rely on ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...