Nokea
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.
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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.
A woman asks the nurse, 'What protects my baby's umbilical cord from being squashed while the baby's inside of me?' The nurse's best response is:
- A. Your baby's umbilical cord is surrounded by connective tissue called Wharton jelly, which prevents compression of the blood vessels and ensures continued nourishment of your baby.
- B. Your baby's umbilical floats around in blood anyway.
- C. You don't need to worry about things like that.
- D. The umbilical cord is a group of blood vessels that are very well protected by the placenta.
Correct Answer: A
Rationale: Wharton jelly surrounds the umbilical cord and prevents compression of the blood vessels.
What condition would the nurse suspect in a patient with irregular menstrual cycles, obesity, and abnormal hair growth on the face?
- A. endometriosis
- B. hyperprolactinemia
- C. polycystic ovary syndrome
- D. hydrosalpinx
Correct Answer: C
Rationale: The correct answer is C: polycystic ovary syndrome (PCOS). Irregular menstrual cycles, obesity, and abnormal hair growth are common symptoms of PCOS. PCOS is a hormonal disorder that affects women of reproductive age. Irregular menstrual cycles occur due to anovulation. Obesity is often associated with insulin resistance, a common feature of PCOS. Abnormal hair growth, known as hirsutism, is a result of elevated levels of male hormones (androgens). Endometriosis (A) is characterized by the presence of endometrial tissue outside the uterus, causing pelvic pain and infertility. Hyperprolactinemia (B) is an excess of prolactin hormone, leading to irregular menstrual cycles and milk production. Hydrosalpinx (D) is the accumulation of fluid in a fallopian tube, causing infertility but not the symptoms described.
Where does conception most commonly occur?
- A. None
- B. In the ampulla of the fallopian tube.
- C. None
- D. None
Correct Answer: B
Rationale: Fertilization typically occurs in the ampulla.
At which point in the pregnancy are alveoli formed and fetal breathing movements noted?
- A. 12 weeks
- B. 6 weeks
- C. 20 weeks
- D. 24 weeks
Correct Answer: D
Rationale: The correct answer is D (24 weeks) because alveoli formation and fetal breathing movements are typically observed during the late second trimester, around 24 weeks. At this stage, the lungs have developed sufficiently to support breathing outside the womb. Choices A (12 weeks), B (6 weeks), and C (20 weeks) are incorrect because alveoli formation and breathing movements do not occur as early as these time points in the pregnancy. Fetal breathing movements are a crucial sign of lung maturation and readiness for extrauterine life, which is why the correct answer is 24 weeks.