Nokea
Which of the following adverse reactions may occur when a client is taking danazol (Danocrine) for fibrocystic breast disease?
- A. Nausea
- B. Confusion
- C. Amenorrhea
- D. Hypotension
Correct Answer: C
Rationale: Amenorrhea is a known side effect of danazol.
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Hair like process on the sperm cell that makes it motile or moveable is
- A. Cilia
- B. Flagella
- C. Pseudopodia
- D. Dendritic processes
Correct Answer: B
Rationale: The correct answer is B: Flagella. Flagella are whip-like structures that provide motility to sperm cells. They enable the sperm cell to move towards the egg for fertilization. Cilia (choice A) are shorter hair-like structures involved in movement but are not found on sperm cells. Pseudopodia (choice C) are temporary projections used for cell movement in some organisms, not sperm cells. Dendritic processes (choice D) refer to branching extensions of nerve cells, not involved in sperm motility. Therefore, flagella is the most appropriate choice for the hair-like process on the sperm cell that makes it motile.
The process when the ovarian follicle ruptures and releases an ovum is called ___________.
- A. Menopause
- B. ovulation
- C. Implantation
- D. Breast
Correct Answer: B
Rationale: The correct answer is B: ovulation. Ovulation is the process where the ovarian follicle ruptures and releases an ovum. This occurs around the middle of the menstrual cycle. Menopause (A) is the cessation of menstrual periods, not the release of an ovum. Implantation (C) is the attachment of a fertilized egg to the uterine wall, not the release of an ovum. Breast (D) is not related to the process of ovulation.
The end of the vas deferens is a dilated sac called the _____.
- A. ductus deferens
- B. seminal vesicle
- C. ampulla
- D. ejaculatory duct
Correct Answer: C
Rationale: The correct answer is C: ampulla. The ampulla is a dilated portion at the end of the vas deferens where it joins with the duct of the seminal vesicle to form the ejaculatory duct. This structure serves as a storage and mixing area for sperm and seminal fluid before ejaculation. The other choices, A: ductus deferens, is another name for the vas deferens itself; B: seminal vesicle is a gland that produces seminal fluid but is not the dilated sac at the end of the vas deferens; D: ejaculatory duct is formed by the union of the vas deferens and the duct of the seminal vesicle, it is not the dilated sac itself.
How many chromosomes are present in a sperm?
- A. 1
- B. 2
- C. 12
- D. 23
Correct Answer: D
Rationale: The correct answer is D: 23. Sperm cells are haploid, meaning they contain half the number of chromosomes as normal body cells. In humans, normal body cells have 46 chromosomes (23 pairs), while sperm cells have only 23 chromosomes. This is essential for maintaining the correct chromosome number after fertilization.
A: 1 - Incorrect. Sperm cells cannot have only 1 chromosome as they need to contribute genetic material during fertilization.
B: 2 - Incorrect. Having only 2 chromosomes would not provide sufficient genetic diversity for offspring.
C: 12 - Incorrect. This number does not align with the haploid nature of sperm cells in humans with 23 chromosomes.
A professional athlete in her mid-20s has not had a menstrual cycle for 5 years, although a bone density scan revealed normal skeletal mineralization. Which of the following facts elicited during the taking of her medical history may explain these observations?
- A. She consumes a high-carbohydrate diet
- B. Her grandmother suffered a hip fracture at age 79
- C. Her blood pressure is greater than normal
- D. Her plasma estrogen concentration is very low
Correct Answer: D
Rationale: The correct answer is D: Her plasma estrogen concentration is very low. The absence of menstrual cycles in a young athlete with normal bone density suggests hypothalamic dysfunction affecting the menstrual cycle. This can result from low estrogen levels, which are essential for the regulation of menstrual cycles. Low estrogen levels can be caused by intense physical activity, leading to suppression of the hypothalamic-pituitary-ovarian axis.
Choice A is incorrect because a high-carbohydrate diet alone is unlikely to cause amenorrhea. Choice B is irrelevant to the absence of menstrual cycles and normal bone density in the athlete. Choice C, elevated blood pressure, is also unrelated to the situation described.