Each is a characteristic manifestation of necrotizing ulcerative gingivitis (NUG), except one. Which is the exception?
- A. Gingival erythema
- B. Necrosis of interdental papilla
- C. Marasmus
- D. Metallic taste and foul odor
Correct Answer: C
Rationale: The correct answer is C: Marasmus. Marasmus is a form of severe malnutrition and is not a direct manifestation of necrotizing ulcerative gingivitis (NUG). Choices A, B, and D are all characteristic manifestations of NUG. Gingival erythema, necrosis of interdental papilla, and metallic taste with foul odor are commonly associated with NUG due to the inflammatory and necrotic nature of the condition.
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What are the potential consequences of damage to the stomach?
- A. Reduced digestion of carbohydrates
- B. Inability to produce or secrete bile
- C. Inability to produce or secrete gastric acid
- D. Increased ability to produce or secrete intrinsic factor
Correct Answer: C
Rationale: Damage to the stomach can lead to a reduced ability to produce gastric acid (Choice C) and intrinsic factor, the latter of which is crucial for vitamin B12 absorption (Choice D). That's why these two choices are correct. The stomach doesn't play a direct role in the digestion of carbohydrates (Choice A) as this process primarily occurs in the small intestine with the help of pancreatic enzymes. Similarly, bile is produced by the liver and stored in the gallbladder, not the stomach, hence stomach damage wouldn't lead to an inability to produce or secrete bile (Choice B).
With which of the following should fluoride supplements never be taken?
- A. Water
- B. Juice
- C. Milk
- D. Soda
Correct Answer: C
Rationale: Fluoride supplements should never be taken with milk because the fluoride binds with the calcium in the milk, thereby reducing the effectiveness of the fluoride supplement. Other beverages like water, juice, or soda do not share this characteristic as they do not contain the same level of calcium as milk. The rationale behind choosing milk as the correct answer is that it hampers the effectiveness of fluoride supplements, whereas the other choices do not.
Which neuromuscular disease is characterized by abnormal chewing and swallowing patterns, tremors of the mandible, lip, and tongue, frequent drooling, and holding food in the mouth for extended periods?
- A. Developmental disabilities
- B. Parkinson's disease
- C. Epilepsy
- D. Diabetes mellitus
Correct Answer: B
Rationale: The correct answer is B, Parkinson's disease. Parkinson's disease is characterized by abnormal chewing and swallowing patterns, tremors of the mandible, lip, and tongue, frequent drooling, and difficulties in oral functions like holding food in the mouth. Developmental disabilities (Choice A) do not specifically cause these symptoms related to neuromuscular function. Epilepsy (Choice C) is a neurological disorder characterized by recurrent seizures and does not typically present with the described symptoms. Diabetes mellitus (Choice D) is a metabolic disorder that affects blood sugar regulation and does not directly cause the neuromuscular symptoms mentioned in the question.
Does the reduction in oxidative damage that occurs with energy restriction in animals also occur in people whose diets include _____?
- A. fiber and carbohydrates
- B. fatty acids and protein
- C. probiotics
- D. antioxidants and phytochemicals
Correct Answer: D
Rationale: The correct answer is 'antioxidants and phytochemicals'. Antioxidants and phytochemicals help reduce oxidative damage in the body, contributing to healthy aging and a lower risk of chronic diseases. This is the same effect observed in animals when their energy intake is restricted. The other choices are incorrect as there is no direct evidence connecting reduced oxidative damage with diets high in fiber and carbohydrates, fatty acids and protein, or probiotics.
Which of the following is the least likely reason that osteoporosis is more prevalent in women?
- A. women have smaller bodies
- B. women have lower bone mass
- C. women consume less calcium
- D. bone loss begins later in women
Correct Answer: D
Rationale: The correct answer is D. Contrary to the statement, bone loss begins earlier in women, particularly after menopause, due to the decrease in estrogen levels. This drop in estrogen accelerates bone loss, contributing to the higher prevalence of osteoporosis in women. Choices A, B, and C are more likely reasons for the increased prevalence of osteoporosis in women. Women generally have smaller bodies, lower bone mass compared to men, and may consume less calcium, all of which are significant factors contributing to the higher incidence of osteoporosis in women.