which of the following happens in the critical period that occurs in the fourth through eighth weeks of a pregnancy
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Maternity HESI Test Bank

1. During which of the following periods does the development of arms and legs occur in a pregnancy?

Correct answer: C

Rationale: The correct answer is C. The development of arms and legs occurs during the critical period of the fourth to eighth weeks of pregnancy. This timeframe is crucial for the formation of limbs and other key body parts. Choices A, B, and D are incorrect because the development of the lungs, heart, and stomach respectively occurs at different stages of fetal development and is not primarily associated with the fourth to eighth weeks of pregnancy.

2. Which neonatal complications are associated with hypertension in the mother?

Correct answer: A

Rationale: Neonatal complications associated with maternal hypertension are primarily due to placental insufficiency. The correct answer is A, which includes Intrauterine Growth Restriction (IUGR) and prematurity. These complications arise from inadequate blood flow to the fetus, leading to growth restriction and premature birth. Choices B, seizures, and cerebral hemorrhage are more commonly maternal complications rather than neonatal ones. Choice C, hepatic or renal dysfunction, pertains to maternal complications of hypertensive disorders in pregnancy, not neonatal issues. Choice D, placental abruption, and Disseminated Intravascular Coagulation (DIC) are conditions linked to maternal morbidity and mortality, not neonatal complications.

3. Which of the following pairs of bases is present in the rungs of the ladder-like structure of deoxyribonucleic acid (DNA)?

Correct answer: A

Rationale: The correct answer is A: Cytosine with guanine. In the DNA double helix, cytosine always pairs with guanine forming a base pair, and adenine pairs with thymine. These complementary base pairs form the rungs of the ladder-like structure of DNA. Choice B, Rhodamine with biotin, is incorrect as they are not base pairs found in DNA. Choice D, Serine with tyrosine, is incorrect as they are amino acids, not DNA bases. Choice C, Diaminopurine with ribozyme, is also incorrect as ribozyme is an enzyme, not a base, and diaminopurine is not one of the standard bases found in DNA.

4. A client has experienced a fetal demise following a vaginal delivery at term. What should the nurse advise the client?

Correct answer: A

Rationale: After a fetal demise, allowing the parents to bathe and dress their baby can offer them a sense of closure and help them in their grieving process. This act can provide a tangible way for the parents to bond with their baby and create lasting memories. Option B is incorrect because each individual may have different emotional needs and holding the baby may not be appropriate or helpful for everyone. Option C, while well-intentioned, may not be suitable for all parents as naming the baby could be emotionally challenging. Option D is insensitive as it overlooks the grieving process of losing a baby by suggesting a replacement.

5. Which of the following most accurately describes the function of genes?

Correct answer: A

Rationale: The correct answer is A: 'They regulate the development of traits.' Genes play a crucial role in regulating the development of traits by encoding proteins that control various bodily functions and characteristics. This process involves gene expression and the production of proteins that ultimately determine an individual's traits. Choice B is incorrect because genes do not have a direct role in preventing foreign particles from entering the body; this function is primarily carried out by the immune system. Choice C is incorrect as genes do not specifically work with lutein to influence development; genes operate independently to regulate trait expression. Choice D is incorrect as genes are not responsible for transferring oxygen in the bloodstream; this function is carried out by red blood cells and hemoglobin.

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