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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Anticonvulsant medications are not taken on an as-needed basis. They require consistent dosing to maintain therapeutic levels and prevent seizure activity effectively.
Choice B rationale
The goal of anticonvulsant therapy is not just temporary seizure control but long-term management. Medications are continued even after achieving seizure-free status to prevent recurrence.
Choice C rationale
While some patients might achieve control within a few years, there is no standard duration for stopping anticonvulsants. Treatment duration varies based on individual response and risk of recurrence.
Choice D rationale
Anticonvulsant medications are typically taken for a lifetime to manage epilepsy. Long-term therapy is crucial for maintaining seizure control and preventing breakthrough seizures.
Correct Answer is B
Explanation
Choice A rationale
Antiplatelets do not stimulate the plasmin system, which is involved in breaking down clots.
Choice B rationale
Antiplatelet medications work by altering the formation of the platelet plug, preventing platelets from clumping together.
Choice C rationale
They do not initiate the clotting cascade, which is a separate process from platelet aggregation.
Choice D rationale
They do not interfere with the clotting cascade directly but affect platelet aggregation. .
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