Nokea
The upper uterus is the best place for the fertilized ovum to implant due to which anatomical adaptation?
- A. Maternal blood flow is lower.
- B. Placenta attaches most firmly.
- C. Uterine endometrium is softer.
- D. Developing baby is best nourishe
Correct Answer: D
Rationale: The correct answer is D because the upper uterus provides the developing baby with the best nourishment due to increased blood flow and nutrient supply. This area allows for optimal growth and development of the fetus. Maternal blood flow is higher in the upper uterus, not lower (A). While the placenta attaches firmly in the upper uterus, it is not the main reason for the implantation site (B). The uterine endometrium is softer in the lower uterus, not the upper, making choice C incorrect. In summary, the upper uterus is ideal for implantation due to increased nourishment for the developing baby, making choice D the correct answer.
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An expectant father asks the nurse, “Which part of the mature sperm contains the male chromosome?” What is the correct response by the nurse?
- A. X-bearing sperm
- B. The tail of the sperm
- C. The head of the sperm
- D. The middle portion of the sperm
Correct Answer: C
Rationale: The correct response is C: The head of the sperm. The head of the sperm contains the genetic material, including the male chromosome (Y chromosome). This is where the genetic information determining the sex of the offspring is located. The tail of the sperm is responsible for movement, not genetic material. X-bearing sperm would contain the female chromosome, not the male chromosome. The middle portion of the sperm does not specifically contain the genetic material related to determining the sex of the offspring.
What karyotype would the nurse anticipate for a patient with Klinefelter’s syndrome?
- A. XO
- B. XXY
- C. XYY
- D. XXX
Correct Answer: B
Rationale: The correct answer is B: XXY. In Klinefelter's syndrome, individuals have an extra X chromosome, resulting in a karyotype of 47,XXY. This leads to physical and cognitive characteristics associated with the syndrome. Choice A (XO) represents Turner syndrome, which involves a missing X chromosome. Choices C (XYY) and D (XXX) are not associated with Klinefelter's syndrome as they involve extra Y and X chromosomes respectively, leading to different syndromes altogether.
Genomic medicine is an emerging medical discipline that involves using genomic information about an individual as part of the individual’s clinical care. Which example does the nurse associate with genomic medicine?
- A. Screening of neonates for inherited, treatable genetic diseases
- B. Creating drugs specifically for the treatment of cancer
- C. Conducting trial studies to determine how drugs effect individuals
- D. Tracing and gaining knowledge about how genetic mutations occur
Correct Answer: A
Rationale: Rationale:
A is correct as genomic medicine involves using genetic information for clinical care, such as screening neonates for genetic diseases. This helps in early detection and treatment. B is incorrect as drug development is not the main focus of genomic medicine. C is incorrect as trial studies focus on drug effects, not genetic information. D is incorrect as tracing genetic mutations is related to genetics research, not clinical care in genomic medicine.
What are functions of the placenta?
- A. Produces the hormones estrogen, progesterone, and relaxin.
- B. None
- C. Feeds the foetus.
- D. None
Correct Answer: A
Rationale: The placenta produces hormones and stores nutrients for fetal use.
Upon receiving report on a 36-week G1P0 patient, the nurse has been informed that the pregnancy is at high risk because the umbilical cords may become entangled. Which does the nurse understand about this pregnancy?
- A. It is a diamnionic, monochorionic twin gestation.
- B. It is a monoamnionic, monochorionic twin gestation.
- C. It is a monoamnionic, dichorionic twin gestation.
- D. It is a diamnionic, dichorionic twin gestation.
Correct Answer: B
Rationale: The correct answer is B: It is a monoamnionic, monochorionic twin gestation. In this type of pregnancy, twins share the same amniotic sac (monoamnionic) and placenta (monochorionic). This situation increases the risk of cord entanglement, leading to potential complications. The other choices are incorrect because they do not describe a pregnancy with the same level of risk for cord entanglement. Choice A, diamnionic, monochorionic, implies two amniotic sacs, reducing the risk of cord entanglement. Choice C, monoamnionic, dichorionic, describes a less risky scenario with two separate placentas. Choice D, diamnionic, dichorionic, indicates two separate sacs and placentas, also reducing the risk of cord entanglement.