Nokea
The process of capacitation usually occurs in the _____.
- A. vagina
- B. testis
- C. prostate
- D. epididymis
Correct Answer: A
Rationale: The process of capacitation occurs in the female reproductive tract, specifically in the vagina. Capacitation is essential for sperm to fertilize an egg, where they undergo changes in the female reproductive tract to become more motile and capable of penetrating the egg. The vagina provides the ideal environment for capacitation to take place due to its specific pH, temperature, and components present in the cervical mucus. The other choices (B: testis, C: prostate, D: epididymis) are incorrect as capacitation is a process that occurs in the female reproductive tract, not in the male reproductive organs.
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___________is an organelle that helps the sperm to penetrate the ovum.
- A. Acrosome
- B. Zona pellucida
- C. Megalis
- D. None of the above
Correct Answer: A
Rationale: The correct answer is A: Acrosome. The acrosome is an organelle in the head of the sperm that contains enzymes which help the sperm penetrate the outer layer of the ovum during fertilization. It plays a crucial role in the fertilization process.
Explanation of other choices:
B: Zona pellucida is the outer membrane of the ovum that the sperm needs to penetrate, not an organelle within the sperm itself.
C: Megalis is not a relevant organelle involved in fertilization.
D: None of the above is incorrect as the acrosome is the specific organelle that aids in sperm penetration of the ovum.
Which of the following are all components of sperm?
- A. acrosome, flagellum, nucleus
- B. codpiece, flagellum, midpiece
- C. nucleus, seminal vesicles, mitochondria
- D. DNA, flagellum, efferent ductules
Correct Answer: A
Rationale: The correct answer is A: acrosome, flagellum, nucleus. The acrosome contains enzymes for penetrating the egg. The flagellum is the tail for movement. The nucleus contains genetic material. Choice B is incorrect because a codpiece is a protective garment and not a component of sperm. Choice C is incorrect because seminal vesicles and mitochondria are not components of sperm. Choice D is incorrect because efferent ductules are part of the male reproductive system, not a component of sperm.
The entire process of spermatogenesis takes approximately ________.
- A. 25-50 days
- B. 64-72 days
- C. 120 days
- D. 1 year
Correct Answer: C
Rationale: The correct answer is C: 120 days. Spermatogenesis is the process of sperm production, which involves several stages including mitosis, meiosis, and maturation. It takes around 64 days for the sperm to develop from spermatogonia to mature spermatozoa in the seminiferous tubules. After that, the sperm undergo additional maturation in the epididymis for approximately 12-14 days. Therefore, the entire process of spermatogenesis, from the initial division of spermatogonia to the release of mature sperm, takes approximately 120 days.
Choice A (25-50 days) is too short for the complete process of spermatogenesis. Choice B (64-72 days) only covers the time for sperm development in the seminiferous tubules but does not include the maturation period in the epididymis. Choice D (1 year) is too long for spermatogenesis and does not accurately represent the
Patella is a
- A. Irregular bone
- B. Short bone
- C. Sesamoid bone
- D. Flat bone
Correct Answer: C
Rationale: The patella is a sesamoid bone located within the tendon of the quadriceps femoris muscle. Sesamoid bones are small, round bones embedded within tendons, providing protection and improving the mechanical advantage of the muscle. It is not irregular (A), short (B), or flat (D) as it does not fit the structural characteristics of those bone types. Therefore, the correct answer is C.
A 67-year-old man who was admitted for a transurethral resection and fulguration of a stage A bladder tumor is ready for discharge. In his discharge teaching plan the nurse should reinforce the importance of his physician for
- A. periodic cystoscopies
- B. headaches
- C. routine urinalysis
- D. increased daily urinary output
Correct Answer: A
Rationale: Periodic cystoscopies are important to monitor for recurrence of bladder tumors.