Nokea
What is the function of luteinizing hormone?
- A. Maintains the corpus luteum
- B. Ripens the Graafian follicle
- C. Prepares the breasts for lactation
- D. Produces regrowth of the endometrium
Correct Answer: A
Rationale: Luteinizing hormone is responsible for maintaining the corpus luteum after ovulation. This is crucial for the production of progesterone, which helps prepare the endometrium for implantation and supports early pregnancy. Choices B, C, and D are incorrect: B is the function of follicle-stimulating hormone (FSH) which stimulates the growth of ovarian follicles, C is mainly regulated by prolactin, and D is primarily associated with estrogen and progesterone.
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What causes the changes in appearance seen in boys at the time of puberty?
- A. Prolactin
- B. Adrenaline
- C. Estrogen
- D. Testosterone
Correct Answer: D
Rationale: During puberty, boys experience physical changes such as growth of facial and body hair, deepening of the voice, and muscle development. These changes are primarily driven by the hormone testosterone. Testosterone is responsible for the development of male secondary sexual characteristics. Therefore, the correct answer is testosterone. Choices A, B, and C are incorrect because prolactin, adrenaline, and estrogen do not play a significant role in the development of male secondary sexual characteristics during puberty.
Which of the following is an example of a viviparous animal?
- A. Goat
- B. Duck
- C. Crocodile
- D. None of the above
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which component of reproductive health ensures the provision of quality reproductive health services at all levels of the health care system?
- A. Safe motherhood
- B. Adolescent health and development
- C. Health service delivery
- D. Reproductive health information
Correct Answer: C
Rationale: Health service delivery is the component of reproductive health that specifically focuses on ensuring the provision of quality reproductive health services at all levels of the healthcare system. While safe motherhood and adolescent health are important aspects of reproductive health, they do not directly address the quality of health services delivery. Reproductive health information, although crucial, is not the component responsible for ensuring the quality of services provided.
At 16 weeks of pregnancy, the breast changes include:
- A. Montgomery's tubercles are prominent.
- B. Darkening of the nipple.
- C. Prickling, tingling sensation.
- D. Colostrum can be expressed.
Correct Answer: C
Rationale: At 16 weeks of pregnancy, the sensation of prickling and tingling in the breasts is common due to hormonal changes. Montgomery's tubercles becoming prominent is more characteristic of early pregnancy, typically around the first trimester. Darkening of the nipple, known as areola darkening, can occur but is more commonly observed later in pregnancy. The expression of colostrum, the first milk produced by the mammary glands, usually happens closer to the end of pregnancy or after childbirth, not typically at 16 weeks.
What is the term used to describe the gestational sac surrounded by a blood clot and retained in the tube?
- A. A carneous mole.
- B. A hydatidiform mole.
- C. A vesicular mole.
- D. A chorionic mole.
Correct Answer: A
Rationale: The correct answer is A: a carneous mole. A carneous mole occurs when a gestational sac is surrounded by a blood clot and retained in the tube. Choice B, a hydatidiform mole, is incorrect as it refers to an abnormal pregnancy characterized by the presence of hydropic chorionic villi. Choice C, a vesicular mole, is also incorrect as it is another term for a complete hydatidiform mole. Choice D, a chorionic mole, is not a recognized medical term and is therefore incorrect.