Nokea
What factor will inhibit LH secretion?
- A. FSH
- B. progesterone
- C. estrogen
- D. LH
Correct Answer: B
Rationale: The correct answer is B: progesterone. Progesterone inhibits LH secretion by exerting negative feedback on the hypothalamus and pituitary gland. This hormone signals that the body has enough progesterone and does not need additional LH for ovulation. FSH (choice A) stimulates LH secretion, estrogen (choice C) typically increases LH secretion during the menstrual cycle, and LH (choice D) does not inhibit its own secretion.
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The main function of the prostate seems to be _____.
- A. spermatogenesis
- B. production of glycogen
- C. secretion of alkaline mucus
- D. maturation of sperm cells
Correct Answer: C
Rationale: The correct answer is C: secretion of alkaline mucus. The prostate gland produces alkaline mucus that helps neutralize the acidic environment of the vagina, thus enhancing sperm viability. Spermatogenesis (choice A) occurs in the testes, not the prostate. The production of glycogen (choice B) is not a function of the prostate. While the prostate does play a role in sperm transport and nourishment, it does not directly impact the maturation of sperm cells (choice D).
When a nurse is educating a group of women about the risks of breast cancer, she includes which of the following common risk factor?
- A. Older than 30 years of age
- B. Family history of breast cancer
- C. African-American heritage
- D. Breast tenderness, without any sensation
Correct Answer: B
Rationale: Family history is a well-established risk factor for breast cancer.
Which of these includes the other terms?
- A. labia
- B. clitoris
- C. vulva
- D. vestibular glands
Correct Answer: C
Rationale: The correct answer is C: vulva. The vulva includes the labia, clitoris, and vestibular glands. The labia are the outer folds of skin, the clitoris is a highly sensitive erectile structure, and the vestibular glands are located around the vaginal opening. The vulva encompasses all these structures, making it the most inclusive term among the options provided. The other choices are incorrect because they are specific structures that are part of the vulva but do not encompass all the other terms listed.
Female infertility can be caused by hormonal problems, blocked fallopian tubes, and
- A. a cold
- B. lack of appetite
- C. irregular menstrual cycles
- D. STDs
Correct Answer: D
Rationale: The correct answer is D: STDs. Sexually transmitted diseases (STDs) can lead to pelvic inflammatory disease (PID) which can cause scarring and blockage of the fallopian tubes, leading to female infertility. STDs such as chlamydia and gonorrhea can also cause damage to the reproductive organs, affecting fertility. Therefore, STDs are a significant factor contributing to female infertility.
A: A cold is a common viral infection that does not directly impact female fertility.
B: Lack of appetite is not a known cause of female infertility.
C: Irregular menstrual cycles can be a symptom of hormonal imbalances but may not directly lead to infertility.
What excess cellular component do spermatids shed to become sperm during spermiogenesis?
- A. DNA
- B. Cytoplasm
- C. Flagellum
- D. Mitochondria
Correct Answer: B
Rationale: During spermiogenesis, spermatids shed excess cytoplasm to become mature sperm. This process helps streamline the sperm structure for efficient motility and fertilization. DNA (choice A) is essential for sperm function and remains within the sperm. The flagellum (choice C) is actually a necessary structure for sperm motility. Mitochondria (choice D) play a crucial role in providing energy for sperm movement. Shedding excess cytoplasm ensures that the mature sperm is streamlined and optimized for its specific functions.