Answered

Match the terms below with their descriptions.

Key:
a. AV node
b. interval
c. P wave
d. QRS complex
e. SA node
f. segment
g. T wave

1. The intrinsic conduction system structure that initiates atrial depolarization
2. A region on an ECG tracing that is between two waves but doesn't include a wave
3. The deflection on the ECG that is a result of atrial depolarization
4. The deflection on the ECG that is a result of ventricular depolarization



Answer :

GinnyAnswer

Final answer:

The SA node initiates atrial depolarization, ECG segments are regions between waves, and the P wave shows atrial electrical activity.


Explanation:

SA node: The SA node initiates atrial depolarization, serving as the heart's pacemaker.

Segment: An ECG segment is the region between two waves excluding a wave, as seen in the PR segment representing the travel from the AV node to the ventricles.

P wave: Represents atrial depolarization on an ECG tracing, denoting the electrical activity in the atria.


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