ATI RN
ATI Nutrition Practice A
1. Which organ absorbs water and vitamin K and may be affected by ulcerative colitis?
- A. Stomach
- B. Pancreas
- C. Large intestine
- D. Small intestine
Correct answer: C
Rationale: The large intestine is the organ that is primarily responsible for the absorption of water and vitamin K in the human body. A disease like ulcerative colitis can disrupt these functions by causing inflammation and ulcers in the lining of the large intestine, leading to digestive issues. The stomach (Choice A) primarily functions to break down and digest food, not to absorb water and vitamins. The pancreas (Choice B) secretes enzymes to aid in digestion and hormones to regulate blood sugar, but does not absorb water and vitamins. The small intestine (Choice D) is primarily responsible for absorbing nutrients from digested food, but not specifically water and vitamin K. Therefore, these other choices are incorrect.
2. What is the form in which energy from excess intake of proteins, fats, alcohol, and carbohydrates is stored?
- A. Protein
- B. Fat
- C. Carbohydrates
- D. Alcohol
Correct answer: B
Rationale: When the body consumes more energy than it needs, the surplus is stored as fat, regardless of whether the energy source was proteins, fats, alcohol, or carbohydrates. This is why the correct answer is 'Fat'. Other choices are incorrect because, in excess intake situations, the body does not store surplus energy as proteins, carbohydrates, or alcohol.
3. Why is atherosclerosis dangerous to arterial function?
- A. It diminishes central circulation
- B. It causes decreased blood pressure on artery walls
- C. It narrows the arterial lumen so a clot can easily block it
- D. It increases arterial elasticity
Correct answer: C
Rationale: Atherosclerosis is dangerous to arterial function because it narrows the arterial lumen, increasing the risk of a clot completely blocking the blood flow. This can lead to severe cardiovascular events such as heart attacks or strokes. Choice A is incorrect since atherosclerosis does not primarily diminish central circulation, but rather, it impedes local blood flow where the plaque is present. Choice B is also incorrect as atherosclerosis increases the pressure on artery walls due to the narrowed space for blood flow, not decrease it. Lastly, choice D is incorrect as atherosclerosis causes the arteries to lose their elasticity, not increase it.
4. Which type of drug is most likely to cause unintentional weight gain?
- A. Antiemetics
- B. Sedatives
- C. Corticosteroids
- D. Antibiotics
Correct answer: C
Rationale: Corticosteroids are most likely to cause unintentional weight gain. They influence the metabolism and fat distribution in the body, leading to weight gain. On the other hand, antiemetics are drugs that are used to prevent nausea and vomiting, and they do not typically cause weight gain. Sedatives, while they can cause drowsiness and may lead to less physical activity, are not directly associated with weight gain. Lastly, antibiotics are used to fight bacteria and while they can cause temporary digestive issues, they do not typically result in long-term weight gain.
5. Which risk factors increase the risk of atherosclerosis?
- A. Exercise
- B. Excessive sun exposure
- C. Insufficient vaccinations
- D. Smoking
Correct answer: D
Rationale: Smoking is a major risk factor for atherosclerosis. It significantly contributes to the buildup of plaque in the arteries and thereby increases the risk of cardiovascular diseases. On the other hand, exercise is generally beneficial for cardiovascular health and is not a risk factor for atherosclerosis. Excessive sun exposure and insufficient vaccinations have no established links to atherosclerosis, making them incorrect options for this question.
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