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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Approximately 3 days after fertilization, what is the term for the developing zygote, which is a 16-cell mass?
- A. Trophoblast
- B. Morula
- C. Blastocyst
- D. Embryoblast
Correct Answer: B
Rationale: The correct answer is B: Morula. At approximately 3 days post-fertilization, the zygote undergoes multiple cell divisions, forming a 16-cell mass known as a morula. This stage precedes the formation of a blastocyst, which occurs around day 5. The trophoblast refers to the outer layer of cells in the blastocyst responsible for implantation, while the embryoblast is the inner cell mass that gives rise to the embryo. Therefore, the morula stage accurately represents the 16-cell mass at this specific developmental timeline.
What is the hormone responsible for the maintenance of the endometrium during pregnancy and the maturation of mammary gland tissue?
- A. Estrogen
- B. Human chorionic gonadotropin (hCG)
- C. Prolactin
- D. Progesterone
Correct Answer: D
Rationale: The correct answer is D: Progesterone. Progesterone is essential for maintaining the endometrium during pregnancy by promoting its growth and preventing contractions. It also plays a crucial role in preparing the mammary glands for lactation. Estrogen (A) is important in the menstrual cycle but not specifically for maintaining the endometrium during pregnancy. Human chorionic gonadotropin (hCG) (B) is produced by the placenta and is primarily involved in supporting pregnancy and detecting pregnancy tests. Prolactin (C) is responsible for milk production but is not directly related to the maintenance of the endometrium or mammary gland tissue during pregnancy.
Conception and Fetal Development NCLEX Questions
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.
Match each term with its description. Blastocyst
- A. None
- B. None
- C. Part of the blastocyst that will develop into the placenta.
- D. None
Correct Answer: C
Rationale: Blastocyst contains structures forming the placenta.
What patient may need laparoscopic surgery?
- A. a patient with low antral follicle count
- B. a patient with an elevated prolactin level
- C. a patient with patent fallopian tubes on hysterosalpingogram
- D. a patient with suspected endometriosis
Correct Answer: D
Rationale: The correct answer is D because laparoscopic surgery is commonly used to diagnose and treat endometriosis due to its ability to visualize and remove endometrial implants. Patients with suspected endometriosis often have symptoms like pelvic pain and infertility, making laparoscopy a suitable option for both diagnosis and treatment. Choices A, B, and C are incorrect as they do not typically require laparoscopic surgery. Low antral follicle count and elevated prolactin levels are more related to infertility evaluations, while patent fallopian tubes on hysterosalpingogram indicate normal tubal patency and do not necessarily warrant laparoscopic intervention.