Nokea
A nurse is called to the playground near her house in relation to an adolescent who experienced intense pain in his testicle after riding his bike. The nurse suspects which of the following problems has occurred?
- A. Torsion of the spermatic cord
- B. Cryptorchidism
- C. Phimosis
- D. Spermatocele
Correct Answer: A
Rationale: Testicular torsion presents with sudden, severe pain and requires immediate medical attention.
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The tiny female sex cell that unites with male sperm to form a zygote or fertilized egg.
- A. Ovary
- B. Ovum
- C. Gonad
- D. Gamets
Correct Answer: B
Rationale: The correct answer is B: Ovum. The ovum is the mature female sex cell that unites with a male sperm during fertilization to form a zygote. Ovary (A) is the organ that produces eggs but is not the actual female sex cell. Gonad (C) is a general term for reproductive organs, not the specific female sex cell. Gametes (D) refer to both male and female sex cells, so it is a broad term and not the specific female sex cell. The ovum is the only choice that accurately represents the tiny female sex cell involved in fertilization.
Ovulation occurs in response to the release of an anterior pituitary hormone known as ________ hormone
- A. antidiuretic
- B. thyroid-stimulating
- C. luteinizing
- D. follicle-stimulating
Correct Answer: C
Rationale: The correct answer is C: luteinizing hormone (LH). LH is released by the anterior pituitary gland to trigger ovulation in females. It causes the mature ovarian follicle to release an egg during the menstrual cycle. Antidiuretic hormone (A) is involved in regulating water balance, not ovulation. Thyroid-stimulating hormone (B) stimulates the thyroid gland, not the ovaries. Follicle-stimulating hormone (D) helps in the development of ovarian follicles, but it is not responsible for triggering ovulation. Therefore, C is the correct answer as it directly stimulates the release of the egg during ovulation.
Which of the following is/are an example(s) of asexual reproduction?
- A. Fission.
- B. Fragmentation.
- C. Budding.
- D. All of the abov
Correct Answer: D
Rationale: The correct answer is D: All of the above. Asexual reproduction involves the production of offspring from a single parent without the involvement of gametes or fertilization.
- Fission: Organism splits into two or more parts, each regenerating into a new individual.
- Fragmentation: Parent organism breaks into fragments, with each fragment developing into a new individual.
- Budding: New individuals develop as outgrowths or buds from the parent organism.
All these processes result in genetically identical offspring, making them examples of asexual reproduction.
Which of the following is the most accurate sequence of hormones?
- A. FSH
- B. LH
- C. estrogen
- D. progesterone
Correct Answer: A
Rationale: The correct sequence is A: FSH, as it initiates the menstrual cycle by stimulating the growth of follicles in the ovaries. LH then triggers ovulation. Estrogen is produced by the developing follicles and peaks before ovulation, while progesterone rises after ovulation. The other choices are incorrect as they do not follow the physiological sequence of hormonal actions in the menstrual cycle.
Regarding germ cell tumor of testis
- A. Seminoma is the commonest pure testicular germ cell tumor
- B. Serum alph
- C. FP increases in choriocarcinoma
- D. Schiller- Duvall body is the characteristic histological feature seen in yolk sac tumor
Correct Answer: A
Rationale: The correct answer is A: Seminoma is the commonest pure testicular germ cell tumor. Seminoma is indeed the most common pure germ cell tumor of the testis, accounting for about 40-50% of cases. It typically presents in young adult males and has a good prognosis. Seminoma histologically consists of clear cytoplasmic glycogen and distinct cell borders. Choice B is incorrect as it seems to be incomplete. Choice C is incorrect as AFP (alpha-fetoprotein) increases in yolk sac tumors, not choriocarcinoma. Choice D is incorrect as Schiller-Duvall bodies are characteristic of embryonal carcinoma, not yolk sac tumors.