An ectopic focus is the place where
A)an abnormally excitable area of the heart initiates a premature action potential
B)all of the electrical impulses of the heart terminate normally
C)an ECG lead is attached on the outside of the chest
D)a heart valve is attached
E)the chordae tendineae attach to a valve

Question

Quizplus · Accepted Answer

An ectopic focus is an abnormally excitable area of the heart that initiates a premature action potential, leading to an irregular heartbeat. It can occur in different regions of the heart, such as the atria or ventricles, and can cause various arrhythmias.

An Ectopic Focus Is the Place Where