Which of the following best describes the contraction of the cardiac cells from the electrical discharge?

Question

Quizplus · Accepted Answer

Depolarization is the process by which the electrical discharge causes the cardiac cells to contract. This electrical signal triggers the release of calcium ions, which leads to the contraction of the heart muscle. Repolarization is the process by which the cells return to their resting state after contraction, and polarization refers to the resting potential of the cells before they are stimulated. Negative deflection refers to the downward direction of the electrical waveform on an ECG, which is not directly related to the contraction of the heart muscle.

Which of the Following Best Describes the Contraction of the Cardiac