A nurse is reinforcing teaching with a newly licensed nurse about embryonic nutrition.
Which of the following statements by the newly licensed nurse indicates an understanding of the teaching?
Prior to the development of the placenta, the amnion provides nutrients.
The chorion supports development of the embryo.
The allantois will work to provide nutrients prior to the development of the placenta.
The yolk sac provides nutrients to the developing embryo.
The Correct Answer is D
Choice A rationale
The amnion is a membrane that encloses the amniotic fluid but does not provide nutrients to the embryo.
Choice B rationale
The chorion forms part of the placenta and contributes to nutrient and gas exchange once the placenta develops, but it does not provide nutrients before the placenta forms.
Choice C rationale
The allantois is involved in early fluid exchange and waste management but does not provide nutrients before the placenta forms.
Choice D rationale
The yolk sac provides nutrients to the developing embryo before the placenta is fully functional, supporting early embryonic development.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While mutations in certain genes can increase the risk of various conditions, a positive test for a mutation of the GDF15 gene is not specifically associated with hypothyroidism.
Choice B rationale
Low TSH and elevated T4 levels typically indicate hyperthyroidism, not hypothyroidism. Hypothyroidism is characterized by high TSH and low T4 levels.
Choice C rationale
Hashimoto's disease is an autoimmune disorder that destroys thyroid tissue, leading to hypothyroidism due to reduced thyroid hormone production.
Choice D rationale
Helicobacter pylori infection is associated with gastrointestinal issues, but it is not directly linked to an increased risk of hypothyroidism.
Correct Answer is A
Explanation
Choice A rationale
Duchenne-Erb (Erb's) palsy is a type of brachial plexus injury that commonly results in an absent Moro reflex on the affected side, an extended arm at the elbow, and decreased grasp. These symptoms arise from injury to the fifth and sixth cervical nerves, leading to motor deficits.
Choice B rationale
This describes facial nerve palsy, not Erb's palsy. Facial nerve palsy affects the muscles of the face, leading to asymmetry during crying and drooping of the mouth's corner on the affected side.
Choice C rationale
While asymmetry of the Moro reflex is accurate, this choice incorrectly states that the arm is externally rotated and the grasp reflex is absent, which aligns more with a total brachial plexus injury rather than Erb's palsy.
Choice D rationale
Crepitus, no movement, swelling, and tenderness on palpation are indicative of a fracture rather than Erb's palsy. These symptoms suggest bone injury rather than nerve damage.
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