Nokea
Bile facilitates digestion by causing the _____ of fats.
- A. hydrolysis
- B. digestion
- C. catalysis
- D. emulsification
Correct Answer: D
Rationale: Bile facilitates digestion by emulsifying fats, breaking them down into smaller droplets for better absorption. Emulsification increases the surface area of fats for enzymes to work on. Hydrolysis (A) is the breakdown of molecules by adding water, not specific to fats. Digestion (B) is a general term encompassing all processes, not specific to fats. Catalysis (C) refers to the process of speeding up chemical reactions but doesn't specifically relate to fats like emulsification does.
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The nurse is teaching a patient with diabetes about foot care. Which statement by the patient indicates that further teaching is needed?
- A. "I should wash my feet daily with warm water and mild soap."
- B. "I should inspect my feet daily for blisters, redness, or cuts."
- C. "I can use heating pads to warm my feet if they are cold."
- D. "I should trim my toenails straight across."
Correct Answer: C
Rationale: Correct Answer: C - "I can use heating pads to warm my feet if they are cold."
Rationale:
1. Using heating pads can cause burns or injuries due to reduced sensation in diabetic feet.
2. Patients with diabetes should avoid direct heat on their feet.
3. Optimal foot care for diabetics includes inspecting feet, washing with mild soap, and trimming nails correctly.
Summary:
A: Correct - Washing feet daily is recommended.
B: Correct - Inspecting feet daily is essential for early detection of issues.
C: Incorrect - Using heating pads can be harmful to diabetic feet.
D: Correct - Trimming toenails straight across is an appropriate practice.
What problem should the nurse assess the patient for if the patient was on prolonged antibiotic therapy?
- A. Coagulation problems
- B. Impaired absorption of amino acids
- C. Elevated serum ammonia levels
- D. Increased mucus and bicarbonate secretion
Correct Answer: C
Rationale: The correct answer is C: Elevated serum ammonia levels. Prolonged antibiotic therapy can lead to disruption of normal gut flora, causing overgrowth of ammonia-producing bacteria. Elevated serum ammonia levels can indicate hepatic encephalopathy, a serious condition that requires immediate intervention. Coagulation problems (A) are more commonly associated with liver disease or vitamin deficiencies. Impaired absorption of amino acids (B) is typically seen in conditions like celiac disease or gastrointestinal disorders, not specifically related to prolonged antibiotic use. Increased mucus and bicarbonate secretion (D) are not directly related to prolonged antibiotic therapy, but rather to respiratory or gastrointestinal conditions.
The family members of a patient with hepatitis A ask if there is anything that will prevent them from developing the disease. What is the best response by the nurse?
- A. No immunization is available for hepatitis A, nor are you likely to get the disease.'
- B. All family members should receive the hepatitis A vaccine to prevent or modify the infection.'
- C. Those who have had household or close contact with the patient should receive immune globulin.'
- D. Only those individuals who have had sexual contact with the patient should receive immunization.'
Correct Answer: C
Rationale: The correct answer is C: Those who have had household or close contact with the patient should receive immune globulin. This is because immune globulin can provide passive immunity to those exposed to hepatitis A, reducing the risk of developing the disease. Hepatitis A vaccine is not effective post-exposure, so it would not prevent disease in this scenario (option B). Option A is incorrect as there is a vaccine available for hepatitis A. Option D is incorrect because hepatitis A is primarily transmitted through fecal-oral route, not sexual contact.
Which of the following statements correctly describes GABA (gamma-amino butyric acid)?
- A. GABA is released at the presynaptic terminal to inhibit dopamine release
- B. GABA is released by GABA neurons and blocks propagation of the dopamine-triggered signal in the post synapse
- C. heroin and morphine stimulate GABA release
- D. all of the above are true
Correct Answer: B
Rationale: Rationale: Choice B is correct because GABA is indeed released by GABA neurons and acts to inhibit the propagation of signals triggered by dopamine in the post-synaptic neuron. GABA functions as an inhibitory neurotransmitter in the central nervous system. Choices A and C are incorrect. Choice A is inaccurate because GABA inhibits the release of dopamine, not the other way around. Choice C is incorrect as heroin and morphine act on opioid receptors, not GABA receptors. Choice D is incorrect because not all statements are true.
Which of the following is a major site of nutrient absorption?
- A. duodenum
- B. jejunum
- C. ileum
- D. colon
Correct Answer: B
Rationale: The correct answer is B: jejunum. The jejunum is a major site of nutrient absorption in the small intestine due to its extensive surface area and presence of villi and microvilli that facilitate absorption of nutrients like carbohydrates, proteins, and fats. The duodenum primarily functions in digestion, the ileum mainly absorbs vitamin B12 and bile salts, and the colon absorbs water and electrolytes. Therefore, the jejunum is the correct choice for being a major site of nutrient absorption.