Nokea
Which condition in men is termed as Nongonococcal urethritis?
- A. Chlamydia
- B. Gonorrhea
- C. Herpes
- D. Syphilis
Correct Answer: A
Rationale: The correct answer is A: Chlamydia. Nongonococcal urethritis is primarily caused by Chlamydia trachomatis, a common sexually transmitted infection. Chlamydia is a major cause of urethritis in men. Gonorrhea (choice B) is another sexually transmitted infection but is not classified as nongonococcal urethritis. Herpes (choice C) and Syphilis (choice D) are caused by different pathogens and present with distinct symptoms, not typically associated with urethritis. Therefore, Chlamydia is the correct choice for Nongonococcal urethritis.
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What is the function of the prolactin hormone?
- A. Prolactin promotes the production of milk from elements in the blood.
- B. Prolactin stimulates the development of alveoli.
- C. Prolactin stimulates increased production of tubules and ducts.
- D. Prolactin promotes the growth and development of the breasts' fatty tissue.
Correct Answer: A
Rationale: Prolactin is primarily responsible for milk production in the mammary glands.
Choose the CORRECT match. Animals Fertilization Embryonic development
- A. Dog Internal Oviparity
- B. Duck External Viviparity
- C. Frog External Oviparity
- D. Cat Internal Ovoviviparity
Correct Answer: C
Rationale: The correct match is C: Frog - External Oviparity. Frogs lay eggs externally, and their fertilization and embryonic development occur outside the female's body. This is characteristic of oviparous animals. The other choices are incorrect because:
A: Dog - Internal Oviparity, dogs give birth to live young and do not lay eggs.
B: Duck - External Viviparity, ducks also give birth to live young and do not lay eggs externally.
D: Cat - Internal Ovoviviparity, cats give birth to live young but retain eggs inside their body until they hatch.
Which vitamin is essential for bone formation?
- A. A
- B. D
- C. B
- D. K
Correct Answer: B
Rationale: The correct answer is B: Vitamin D. Vitamin D is essential for bone formation as it helps the body absorb calcium, a key mineral for bone health. Without sufficient vitamin D, the body cannot effectively utilize calcium, leading to weakened bones. Vitamin A (Choice A) is important for vision and immune function, not specifically bone formation. Vitamin C (Choice C) is crucial for collagen synthesis but not directly involved in bone formation. Vitamin K (Choice D) plays a role in blood clotting and bone mineralization but is not as directly linked to bone formation as Vitamin D.
__________ is an example of an oviparous animal.
- A. Pigeon
- B. Elephant
- C. Sheep
- D. None of the above
Correct Answer: A
Rationale: The correct answer is A: Pigeon. Oviparous animals lay eggs to reproduce, like birds. Pigeons belong to the avian class, known for laying eggs. Elephants and sheep are viviparous mammals, giving birth to live young. "None of the above" is incorrect as pigeons are indeed oviparous.
At the level of the testicle, the straight tubules:
- A. are located inside the lobules;
- B. continue the convoluted seminiferous tubules;
- C. open in the rete testis;
- D. open in the epididymal duct;
Correct Answer: C
Rationale: The correct answer is C because the straight tubules open into the rete testis, which is a network of tubules located at the hilum of the testis. This is where sperm produced in the seminiferous tubules are collected and transported to the epididymis for maturation. The other choices are incorrect because A is not accurate as straight tubules are not located inside the lobules, B is incorrect as straight tubules are a separate structure from the convoluted seminiferous tubules, and D is inaccurate as straight tubules do not open directly into the epididymal duct.