Correct Answer: D

Rationale: The correct answer is D because Fordyce's granules are small, yellow-white or flesh-colored spots that are sebaceous glands and commonly found on the oral mucosa. They are benign and do not require treatment. In this case, the patient's description matches the characteristics of Fordyce's granules. Option A is incorrect because strep throat typically presents with other symptoms like sore throat and fever, not white bumps in the mouth. Option B is incorrect as there is no indication of a serious lesion based on the description given. Option C is incorrect as leukoplakia is a condition associated with chronic irritation, not Fordyce's granules.

Correct Answer: C

Rationale: The correct answer is C because as individuals age, there is a natural decrease in skin elasticity, subcutaneous fat, and moisture content in the skin. These factors contribute to the bones becoming more noticeable in the face. Choice A is incorrect because diets low in protein and high in carbohydrates do not directly cause enlargement of facial bones. Choice B is incorrect as the use of a specific moisturizer does not directly impact the visibility of facial bones. Choice D is incorrect because facial skin actually loses elasticity with age, leading to less taut skin and more prominent bones.

Correct Answer: B

Rationale: The correct answer is B: This is a bifid uvula, which is a common occurrence in some Aboriginal groups. 1. A bifid uvula is a condition where the uvula is split or divided, which is a common variation seen in some Aboriginal populations. 2. Cleft palate is a different condition involving a gap in the roof of the mouth, not specifically related to Aboriginal people. 3. Uvular injury is not a common cause of a split uvula in children, so reporting to authorities is unnecessary. 4. Torus palatinus is a bony growth on the roof of the mouth and not related to a split uvula or specific to Aboriginal populations.

Correct Answer: C

Rationale: The correct answer is C because the frontal sinuses are indeed fairly well developed at birth. This is true as the frontal sinuses start developing around the age of 7-8 years but are present in a rudimentary form at birth. This is because the frontal bone grows rapidly in the first few years of life, allowing for the development of the frontal sinuses. Choice A is incorrect because the sphenoid sinuses are not at full size at birth; they continue to develop throughout childhood. Choice B is incorrect as the maxillary sinuses reach full size around the teenage years, not after puberty. Choice D is incorrect as the frontal sinuses are also present at birth, along with the maxillary and ethmoid sinuses.

Correct Answer: B

Rationale: The correct answer is B: Dehydration. Depressed and sunken fontanelles in an infant indicate dehydration due to decreased fluid volume. Dehydration causes a decrease in tissue turgor, leading to the fontanelles appearing sunken. Rickets (A) is a condition characterized by weak or soft bones due to vitamin D deficiency. Mental retardation (C) is a developmental disorder, not related to fontanelle appearance. Increased intracranial pressure (D) would cause bulging fontanelles, not depressed fontanelles. Therefore, the most likely condition in this case is dehydration.