Match the following letters to the appropriate event in the contraction cycle. A B C D E B ente E D A SA node fires atrial contraction occurs atria relax ventricular systole ventricles relax < >
Match the following letters to the appropriate event in the contraction cycle. A B C D E B ente E D A SA node fires atrial contraction occurs atria relax ventricular systole ventricles relax < >
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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Transcribed Image Text:Match the following letters to the appropriate event in the contraction cycle.
Diagram Explanation:
The diagram is a simplified representation of an electrocardiogram (ECG) trace. It consists of a series of distinct waves labeled A through E, each corresponding to different events in the cardiac cycle.
- **A**: Represents the firing of the SA node.
- **B**: Corresponds to atrial contraction.
- **C**: Indicates atrial relaxation.
- **D**: Represents ventricular systole.
- **E**: Corresponds to ventricular relaxation.
Interactive Chart:
- **A**: SA node fires
- **B**: Atrial contraction occurs
- **C**: Atria relax
- **D**: Ventricular systole
- **E**: Ventricles relax
This exercise is designed to enhance your understanding of the sequence of events during the cardiac cycle as demonstrated by the ECG trace.
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