Cardiac pacemaker Cardiac pacemaker The contraction of cardiac muscle (heart muscle) in all animals is initiated by electrical impulses known as action potentials. The rate at which these impulses fire controls the rate of cardiac contraction, that is, the heart rate. 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. In most humans, the concentration of pacemaker cells in the sinoatrial (SA) node is the natural pacemaker, and the resultant rhythm is a
Maite (given name) to: Maite (given name) Maite ( ) is a female given name of Basque origin meaning "love". It has become a popular name throughout Spanish-language countries, where it is usually stressed on the first syllable. Alternatively, it is also the Spanish nickname (sort of a contraction) for both "María Teresa" and "María Esther", in which case it is most frequently stressed on the last syllable and spelled with y, thus Mayté. It is also used as a proper name in the Portuguese-speaking Brazil in the forms of Maitê and Maytê (both pronounced /maj'te/), stressed on the last syllable. Mayte may