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
ACE inhibitors can cause teratogenic effects, meaning they can harm a developing fetus. Therefore, precautions should be taken to avoid pregnancy while taking these drugs.
Choice B rationale
Spermicidal jellies alone are not a highly reliable form of contraception. For women taking ACE inhibitors, a more reliable method of contraception is recommended to prevent pregnancy.
Choice C rationale
The minipill, a progestin-only contraceptive, is not the contraceptive of choice when the risk of teratogenic effects from ACE inhibitors is considered. Barrier methods are preferred to avoid potential drug interactions.
Choice D rationale
Barrier contraception, such as condoms or diaphragms, is recommended for women taking ACE inhibitors to prevent pregnancy due to the teratogenic risk associated with these drugs.
Correct Answer is D
Explanation
Choice A rationale
Ergotamine does not increase hypoperfusion. It is used to constrict blood vessels to reduce blood flow.
Choice B rationale
Ergotamine does not decrease hypoperfusion. It is used to constrict blood vessels to reduce blood flow.
Choice C rationale
Ergotamine does not increase hyperperfusion. It is used to constrict blood vessels to reduce blood flow.
Choice D rationale
Ergotamine decreases hyperperfusion by constricting blood vessels in the basilar artery vascular bed, reducing the blood flow to relieve migraine headaches. .
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