In an EKG, what does the QRS wave indicate? electrical signal over the ventricles first heart sound second heart sound electrical signal over the atria

Answered: In an EKG, what does the QRS wave…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question

In an EKG, what does the QRS wave indicate?

		electrical signal over the ventricles
		first heart sound
		second heart sound
		electrical signal over the atria

Expert Solution

Step 1

Introduction:

ECG or EKG stands for electrocardiograph. It is referred to as the graphical representation that measures the electrical activity occurring in the heart at the time of the cardiac cycle. The study of ECG or electrocardiograph helps in detecting any abnormalities or clinical conditions that may be associated with the heart. It helps in diagnosing any disease and abnormal function of the heart. The four waves a present on an ECG. P, Q, R and S. In the condition of arrhythmia, these waves become irregular.