Several nursing students are ordering a poster on the mechanism of the heart.
What structure would they label as separating the right half of the heart from the left?

Auricle.

Syncytia.

Bundle of His.

Septum.

Answer and Explanation

The Correct Answer is D

Choice A rationale

The auricle is an ear-shaped appendage on the surface of the atrium and does not separate the right and left halves of the heart. Its function is to increase the capacity of the atrium, allowing for more blood to be collected and passed to the ventricles.

Choice B rationale

Syncytia refer to a multinucleated cell that can result from the fusion of multiple cells, which is not a structure that separates the right and left sides of the heart. They are typically related to muscle tissue and coordinated contractions.

Choice C rationale

The Bundle of His is a collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches. It does not act as a separator between the right and left halves of the heart.

Choice D rationale

The septum is the structure that separates the right and left halves of the heart. It is a robust wall that divides the atria (interatrial septum) and the ventricles (interventricular septum), ensuring the segregation of oxygenated and deoxygenated blood.

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Correct Answer is D

Explanation

Choice A rationale

Evidence of human fetal risk would categorize the drug as Category D or X, not Category B.

Choice B rationale

This statement aligns more with Category C drugs, where animal studies show adverse effects, but not Category B.

Choice C rationale

This describes Category A drugs, not Category B.

Choice D rationale

Category B drugs have shown no risk in animal studies but lack adequate human studies, fitting this description.

A. True. B. False.

Correct Answer is A

Explanation

Choice A rationale

Drawing up regular insulin first is recommended to avoid contamination of the vial with other types of insulin.

Choice B rationale

Incorrect, as it is standard practice to draw up regular insulin first to maintain purity and efficacy.

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Several nursing students are ordering a poster on the mechanism of the heart.What structure would they label as separating the right half of the heart from the left?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

Always draw up the regular insulin into the syringe first.

Correct Answer is A

Explanation

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Several nursing students are ordering a poster on the mechanism of the heart.
What structure would they label as separating the right half of the heart from the left?