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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A nurse is instructing a client who has GERD about positions that can help minimize the effects of reflux during sleep. Which of the following statements indicates to the nurse that the client understands the instructions?
- A. I will lie on my left side to sleep at night.'
- B. I will lie on my right side to sleep at night.'
- C. I will sleep on my back with my head flat.'
- D. I will sleep on my stomach with my head flat.'
Correct Answer: A
Rationale: The correct answer is A: "I will lie on my left side to sleep at night." This position helps prevent acid from flowing back into the esophagus due to the angle of the stomach in relation to the esophagus. Lying on the right side can worsen reflux. Sleeping on the back with the head flat can also worsen symptoms as gravity can allow acid to flow back up. Sleeping on the stomach with the head flat is not recommended as it can put pressure on the stomach, leading to increased reflux.
The _____ nervous system division usually stimulates and promotes digestion.
- A. somatic
- B. sympathetic
- C. central
- D. parasympathetic
Correct Answer: D
Rationale: The correct answer is D: parasympathetic. The parasympathetic nervous system is responsible for rest and digest functions, including stimulating digestion. It slows heart rate, increases intestinal activity, and promotes the secretion of digestive enzymes. The somatic nervous system (A) controls voluntary movements, the sympathetic nervous system (B) is responsible for the fight or flight response, and the central nervous system (C) consists of the brain and spinal cord, serving as the main control center of the body.
A nurse is preparing an intervention plan for a client who is receiving tube feedings after an oral surgery. Which of the following measures can prevent improper infusion and assist in preventing vomiting?
- A. Consulting the physician and dietitian
- B. Administering the feedings at room temperature
- C. Changing the tube feeding container and tubing
- D. Checking the tube placement and gastric residual prior to feedings
Correct Answer: D
Rationale: The correct answer is D: Checking the tube placement and gastric residual prior to feedings. This is crucial to ensure proper placement of the tube and to assess if there is any undigested food in the stomach, which can lead to vomiting if fed through the tube. By checking these factors before administering feedings, the nurse can prevent complications.
A: Consulting the physician and dietitian is important but does not directly prevent improper infusion or vomiting.
B: Administering feedings at room temperature is a good practice but does not directly prevent vomiting.
C: Changing the tube feeding container and tubing may be necessary for hygiene but does not directly prevent improper infusion or vomiting.
In summary, checking the tube placement and gastric residual is essential in preventing vomiting and ensuring proper feeding, making it the correct choice.
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.
Which of the following statements regarding Single Nucleotide Polymorphisms (SNPs) in humans is NOT TRUE?
- A. SNPs occur at a frequency of about once every 300 nucleotides
- B. they are a rare source of genetic polymorphisms
- C. a polymorphism leading to increased IL-6 expression is associated with greater mortality
- D. none of the above are true
Correct Answer: B
Rationale: The correct answer is B because SNPs are actually a common source of genetic polymorphisms, occurring frequently in the human genome. SNPs are variations in a single nucleotide base and are estimated to occur once every 300 nucleotides. Choice A is incorrect because of this high frequency. Choice C is also incorrect as certain SNPs can indeed impact gene expression and health outcomes. Choice D is incorrect because B is not true, making the statement false. In summary, B is the correct answer as SNPs are not rare but rather common genetic variations in humans.