Your heart is made up of two atria and two ventricles. Typically, the signal for your heartbeat starts in the right atrium in the sinoatrial node and travels to both the left and right ventricles ...

Common signs of Wenckebach heart block are feeling dizzy, tired, and having a fast heartbeat. These signs can be hard to ...

Excessive alcohol intake can mess up the normal rhythm of the heart and bring on cardiac arrhythmias, a new study shows – adding to concerns about the negative health impacts of binge drinking.

Depending on the degree of the sinoatrial block, the electrical impulses may or may not move from the atria and reach the ventricles. Individuals affected by a sinoatrial block are asymptomatic ...

This stimulates the upper chambers (left and right atria) to contract to pump blood down to the lower chambers (ventricles).

Each side of the heart consists of an atrium and a ventricle which are two connected chambers. The atria (plural of atrium) are where the blood collects when it enters the heart. The ventricles ...

Each side of the heart consists of an atrium and a ventricle which are two connected chambers. The atria (plural of atrium) are where the blood collects when it enters the heart. The ventricles ...