Nokea
Which of these digestive enzymes breaks down fats?
- A. amylase
- B. lipase
- C. trypsin
- D. pepsin
Correct Answer: B
Rationale: The correct answer is B: lipase. Lipase is the enzyme responsible for breaking down fats into fatty acids and glycerol. Amylase (A) breaks down carbohydrates, trypsin (C) breaks down proteins, and pepsin (D) also breaks down proteins but in the stomach. Lipase specifically targets fats in the small intestine, aiding in their digestion and absorption. Therefore, lipase is the correct choice for breaking down fats, making it the most suitable answer among the options provided.
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Priority Decision: Before selecting a weight reduction plan with an obese patient
- A. what is most important for the nurse to first assess?
- B. The patient's motivation to lose weight
- C. The length of time that the patient has been obese
- D. Whether financial considerations will affect the patient's choices
Correct Answer: D
Rationale: Assessing anthropometric measures helps to understand the severity of obesity and provide baseline data for weight loss goals.
The outer layer of the GI tract is composed of connective tissue and a simple squamous epithelium. This tunic is called the tunica ______ and the simple squamous epithelium is called the ______.
- A. adventitia, visceral peritoneum
- B. serosa, visceral peritoneum
- C. serosa, parietal peritoneum
- D. adventitia, parietal peritoneum
Correct Answer: B
Rationale: The correct answer is B: serosa, visceral peritoneum. The outer layer of the GI tract is called the serosa, which is composed of connective tissue and a simple squamous epithelium known as the visceral peritoneum. The serosa helps to protect and support the GI tract.
A: adventitia, visceral peritoneum - Adventitia is a dense connective tissue layer found in structures that are not intraperitoneal, whereas the visceral peritoneum is specific to the peritoneal cavity.
C: serosa, parietal peritoneum - The parietal peritoneum is the outer layer of the peritoneum lining the abdominal cavity, not the outer layer of the GI tract.
D: adventitia, parietal peritoneum - Similar to choice A, the parietal peritoneum is not part of the outer layer of the GI tract.
The nurse recognizes that teaching a patient following a laparoscopic cholecystectomy has been effective when the patient makes which statement?
- A. "I can take a shower and walk around the house tomorrow."
- B. "I need to limit my activities and not return to work for 4 weeks."
- C. "I can expect yellowish drainage from the incision for a few days."
- D. "I will follow a low-fat diet for life because I do not have a gallbladder."
Correct Answer: A
Rationale: Rationale for Correct Answer (A): The statement "I can take a shower and walk around the house tomorrow" indicates an understanding of post-operative activity expectations. After a laparoscopic cholecystectomy, early ambulation is encouraged to prevent complications like blood clots. Additionally, showering promotes wound healing and hygiene.
Incorrect Choices:
B: "I need to limit my activities and not return to work for 4 weeks" - This choice is incorrect as it overestimates the recovery time for a laparoscopic cholecystectomy, which typically allows for a quicker return to normal activities.
C: "I can expect yellowish drainage from the incision for a few days" - While drainage is common after surgery, the color and duration mentioned are not typical for this procedure.
D: "I will follow a low-fat diet for life because I do not have a gallbladder" - Following a low-fat diet is recommended after surgery, but the statement is too extreme as dietary
Which of the following is critical in terms of triggering a fever response?
- A. an infection
- B. a local widening of blood vessels
- C. activation of the complement system
- D. the resetting of the body's temperature set point in the hypothalamus
Correct Answer: D
Rationale: The correct answer is D because the hypothalamus acts as the body's thermostat and controls temperature regulation. When the body detects an infection or other triggers, the hypothalamus resets the temperature set point higher, causing a fever response to help fight off the infection. Choices A, B, and C are incorrect because while an infection can trigger a fever response, it is the hypothalamus that ultimately controls and initiates the response by resetting the temperature set point, not a local widening of blood vessels or activation of the complement system.
Concerning cholecystokinin (CCK):
- A. Secreted from the jejunum
- B. Stimulates the contraction of gallbladder.
- C. inhibits the stomach mobility.
- D. All of the above are correct.
Correct Answer: B
Rationale: Certainly! The correct answer is B: Cholecystokinin (CCK) stimulates the contraction of the gallbladder. This hormone is released from the duodenum in response to the presence of fats and proteins in the small intestine. Its main function is to signal the gallbladder to contract and release bile into the duodenum to aid in the digestion and absorption of fats.
A: CCK is not secreted from the jejunum but from the duodenum.
C: CCK does not inhibit stomach motility; instead, it enhances the release of digestive enzymes and bile.
In summary, choice B is correct as it accurately reflects the role of CCK in stimulating gallbladder contraction, while choices A and C are incorrect based on the functions of CCK in the digestive system.