ATI RN Fundamentals Exam 2 | Nurselytic

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ATI RN Fundamentals Exam 2 Questions

Extract:


Question 1 of 5

The nurse is reviewing the sequence of the cardiac cycle. The nurse recognizes that the electrical stimulus of the cardiac cycle follows which sequence?

Correct Answer: B

Rationale: The correct answer is B (SA node-AV node-bundle of His). The cardiac cycle starts with the SA (sinoatrial) node, which is the heart's natural pacemaker, initiating the electrical impulse. This impulse then travels to the AV (atrioventricular) node, where there is a brief delay to allow the atria to contract before the impulse is conducted to the bundle of His and then to the Purkinje fibers to stimulate ventricular contraction.
Choice A is incorrect as it has the AV node before the SA node.

Choices C and D have the incorrect sequence of the bundle of His and Erb's Point.

Choices E, F, and G are not provided in the question.

Question 2 of 5

Correct Answer:

Rationale:

Question 3 of 5

Correct Answer:

Rationale:

Question 4 of 5

Correct Answer:

Rationale:

Question 5 of 5

Correct Answer:

Rationale:

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