Which of the following terms describes electrical impulses that originate in the atria and initiate an early impulse that interrupts the inherent regular rhythm?

Question

Quizplus · Accepted Answer

Premature atrial complexes (PACs) are electrical impulses that originate in the atria and initiate an early impulse that interrupts the inherent regular rhythm. Atrial kick refers to the extra blood pushed out of the atria during atrial contraction, automaticity is the ability of cardiac cells to depolarize spontaneously without external stimulation, and ectopic impulse is an electrical impulse that originates from a site outside the normal conduction pathway.

Which of the Following Terms Describes Electrical Impulses That Originate