Nokea
When a male is castrated before puberty, he becomes:
- A. Female
- B. Cretin
- C. Eunuch
- D. Potent
Correct Answer: C
Rationale: The correct answer is C: Eunuch. When a male is castrated before puberty, he becomes a eunuch because castration removes the testes, leading to a lack of testosterone production and loss of male secondary sexual characteristics. This results in a eunuch having a more neutral appearance and lacking the ability to reproduce.
A: Choosing "Female" is incorrect because castration does not change the individual's genetic sex.
B: Selecting "Cretin" is incorrect as cretinism is a condition caused by severe thyroid hormone deficiency, not related to castration.
D: Opting for "Potent" is incorrect as castration leads to the loss of reproductive ability, making the individual infertile.
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The gonads, or primary sex organs, produce sex cells, also known as ________.
- A. zygotes
- B. interstitial cells
- C. gametes
- D. spermatids
Correct Answer: C
Rationale: The correct answer is C: gametes. Gonads produce sex cells, which are haploid cells involved in reproduction. Gametes are the mature, haploid male or female germ cells (sperm or egg) produced by the gonads. Zygotes are formed when gametes fuse during fertilization, not produced by gonads. Interstitial cells are found in the testes and produce hormones, not sex cells. Spermatids are immature male germ cells that develop into sperm, not the primary sex cells produced by gonads.
As menstruation ends estrogen levels in the blood rise rapidly. What is the source of the estrogen?
- A. Corpus luteum
- B. Developing follicles
- C. Endometrium
- D. Stromal cells of the ovaries
Correct Answer: B
Rationale: The correct answer is B: Developing follicles. After menstruation, the developing follicles in the ovaries produce estrogen. This estrogen is responsible for thickening the endometrium in preparation for potential implantation of a fertilized egg. The corpus luteum produces progesterone, not estrogen. The endometrium is the inner lining of the uterus and is not a direct source of estrogen. Stromal cells of the ovaries are supportive cells and do not produce estrogen.
After a 26-yr-old patient has been treated for pelvic inflammatory disease, the nurse will plan to teach about the
- A. use of hormone therapy (HT).
- B. potential complication of infertility.
- C. irregularities in the menstrual cycle
- D. changes in secondary sex characteristics.
Correct Answer: B
Rationale: The correct answer is B - potential complication of infertility. Pelvic inflammatory disease (PID) can lead to scarring and damage to the reproductive organs, increasing the risk of infertility. Teaching about this potential complication is crucial for the patient's understanding of the long-term consequences of PID. Option A (use of hormone therapy) is not directly related to PID treatment. Option C (irregularities in the menstrual cycle) may occur but is not the primary concern post-PID treatment. Option D (changes in secondary sex characteristics) is not a common complication of PID. Therefore, option B is the most appropriate choice for teaching post-PID treatment.
When do the testes begin to descend?
- A. at birth
- B. two months after birth
- C. two months prior to birth
- D. in the fifth month of pregnancy
Correct Answer: D
Rationale: The correct answer is D: in the fifth month of pregnancy. The testes begin to descend from the abdomen into the scrotum during the fifth month of pregnancy. This process is crucial for proper development and function of the testes. Descending at this stage allows for the testes to be positioned outside the body, which is essential for sperm production as it requires a slightly lower temperature than the internal body temperature.
Summary:
A: at birth - Incorrect, as the descent of the testes occurs during fetal development, not at birth.
B: two months after birth - Incorrect, as the descent happens during pregnancy, not after birth.
C: two months prior to birth - Incorrect, as the descent occurs during pregnancy, not prior to birth.
Chemotherapeutic agents affect cancer cells by
- A. destroying all affected tumor tissue
- B. preventing antigen-antibody response
- C. interfering with manufacture of cellular nucleic acids
- D. encouraging normal cells to overtake cancer cells
Correct Answer: C
Rationale: Chemotherapy works by interfering with the ability of cancer cells to divide and grow.