Nokea
The hormone that is released from the placenta is
- A. Follicle stimulating hormone
- B. Luteinizing hormone
- C. Estrogen
- D. Human chorionic gonadotropin
Correct Answer: D
Rationale: The correct answer is D: Human chorionic gonadotropin (hCG). This hormone is released from the placenta during pregnancy and is essential for maintaining the corpus luteum, which in turn produces progesterone to support the pregnancy. hCG is also the hormone detected in pregnancy tests.
Choice A (Follicle stimulating hormone) and B (Luteinizing hormone) are involved in the menstrual cycle, not specifically released from the placenta.
Choice C (Estrogen) is produced by the ovaries and not directly released from the placenta.
You may also like to solve these questions
The ejaculatory duct:
- A. forms by the joining of the deferent duct with the seminal vesicle duct;
- B. opens in the urethra;
- C. is an extratesticular spermatic duct;
- D. is an intratesticular spermatic duct;
Correct Answer: A
Rationale: The correct answer is A because the ejaculatory duct is formed by the joining of the deferent duct (vas deferens) with the seminal vesicle duct. This is important for transporting sperm and seminal fluid towards the urethra for ejaculation. Choice B is incorrect because the ejaculatory duct does not open directly into the urethra; rather, it joins with the urethra. Choice C is incorrect as the ejaculatory duct is not extratesticular; it is located within the prostate gland. Choice D is incorrect as the ejaculatory duct is not located within the testicle; it is formed outside the testicle by the union of other structures.
A client is undergoing sentinel lymph node mapping. A nurse explains that this new technique reduces the likelihood of which
- A. Lymphedema
- B. Excessive scarring
- C. Cellulitis
- D. None of the above
Correct Answer: A
Rationale: Sentinel lymph node mapping helps reduce the risk of lymphedema by limiting the number of lymph nodes removed.
Approximately how many sperm are normal ejaculated during intercourse.
- A. 4,000
- B. 40,000
- C. 400,000,000
- D. 4,000,000
Correct Answer: C
Rationale: The correct answer is C: 400,000,000. During ejaculation, a healthy male typically releases around 200-500 million sperm cells. Choice A (4,000) and B (40,000) are too low compared to the average sperm count. Choice D (4,000,000) is also significantly lower than the typical sperm count, making it incorrect. Therefore, C is the correct answer as it aligns with the standard range of sperm count during ejaculation.
Shin bone is also known as
- A. Femur
- B. Tibia
- C. Fibula
- D. Patella
Correct Answer: B
Rationale: The correct answer is B: Tibia. The shin bone is commonly referred to as the tibia. This bone is located on the inner side of the leg and is the larger of the two lower leg bones. The femur (A) is the thigh bone, the fibula (C) is the smaller of the two lower leg bones, and the patella (D) is the kneecap. Therefore, the tibia is the correct answer as it specifically refers to the shin bone.
Testosterone produces negative feedback to:
- A. the anterior pituitary to turn off follicle stimulating hormone secretion
- B. the anterior pituitary to turn off both luteinizing hormone and follicle stimulating hormone secretion
- C. Sertoli cells turn off inhibin secretion
- D. the anterior pituitary to turn off luteinizing hormone secretion
Correct Answer: D
Rationale: Step-by-step rationale:
1. Testosterone inhibits the release of luteinizing hormone (LH) through negative feedback.
2. LH is produced by the anterior pituitary.
3. Therefore, testosterone exerts negative feedback on the anterior pituitary to turn off LH secretion.
4. This maintains hormonal balance in the body.
Summary of other choices:
A. Incorrect because testosterone primarily affects LH secretion, not follicle stimulating hormone (FSH).
B. Incorrect as it inaccurately suggests that testosterone turns off both LH and FSH secretion.
C. Incorrect because Sertoli cells are involved in spermatogenesis, not LH regulation.