Nokea
Where are most digestive enzymes secreted?
- A. stomach
- B. liver
- C. pancreas
- D. small intestine
Correct Answer: C
Rationale: The correct answer is C: pancreas. The pancreas secretes most digestive enzymes, including amylase, lipase, and proteases, into the small intestine to aid in the digestion of carbohydrates, fats, and proteins. It plays a crucial role in breaking down food components. The stomach (choice A) secretes gastric juices but not the majority of digestive enzymes. The liver (choice B) produces bile, which aids in fat digestion, but does not secrete digestive enzymes. The small intestine (choice D) is where most digestion and absorption occur, but it does not secrete the majority of digestive enzymes.
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Secretin and cholecystokinin are secreted in
- A. pyloric region
- B. Ileum
- C. duodenum
- D. Oesophagus
Correct Answer: C
Rationale: The correct answer is C, duodenum. Secretin and cholecystokinin are hormones secreted by the duodenal mucosa in response to the presence of acidic chyme from the stomach entering the duodenum. Secretin stimulates the pancreas to release bicarbonate to neutralize the acidic chyme, while cholecystokinin stimulates the gallbladder to release bile to aid in digestion. Choices A (pyloric region), B (Ileum), and D (Oesophagus) are incorrect because secretin and cholecystokinin are not secreted in these regions of the gastrointestinal tract.
CCK:
- A. increases gastric secretion.
- B. inhibits the stomach motility.
- C. inhibits pancreatic enzyme secretion.
- D. increases pancreatic secretions rich in bicarbonate.
Correct Answer: B
Rationale: Step 1: CCK (Cholecystokinin) is released in response to the presence of fats and proteins in the small intestine.
Step 2: CCK inhibits stomach motility to allow enough time for the gallbladder to release bile.
Step 3: This slowing down of stomach motility aids in the digestion and absorption of fats.
Step 4: Choices A, C, and D are incorrect as CCK does not directly affect gastric secretion, pancreatic enzyme secretion, or increase pancreatic secretions rich in bicarbonate.
A nurse enters the room of a client with cramping, bloating, and flatus, as well as diarrhea and/or constipation, with or without the presence of mucus. What condition do the client's symptoms represent?
- A. Peritonitis
- B. Irritable bowel syndrome
- C. Ulcerative colitis
- D. Appendicitis
Correct Answer: B
Rationale: The correct answer is B: Irritable bowel syndrome. The symptoms described align with the criteria for diagnosing IBS, such as cramping, bloating, and changes in bowel habits. Peritonitis (A) is characterized by severe abdominal pain, fever, and rigidity. Ulcerative colitis (C) presents with bloody diarrhea and abdominal pain. Appendicitis (D) typically causes localized right lower quadrant pain, nausea, and vomiting. Therefore, based on the given symptoms, IBS is the most likely diagnosis.
Which information will the nurse include when teaching a patient with peptic ulcer disease about the effect of ranitidine (Zantac)?
- A. Ranitidine absorbs the excess gastric acid.
- B. Ranitidine decreases gastric acid secretion.
- C. Ranitidine constricts the blood vessels near the ulcer.
- D. Ranitidine covers the ulcer with a protective material.
Correct Answer: B
Rationale: Rationale: Ranitidine is an H2 receptor antagonist that works by blocking the action of histamine on the stomach cells, thereby reducing gastric acid secretion. This helps in healing and preventing further damage to the ulcer. Option A is incorrect as ranitidine doesn't absorb excess gastric acid; it reduces its production. Option C is incorrect as ranitidine doesn't constrict blood vessels. Option D is incorrect as ranitidine doesn't cover the ulcer but rather decreases acid secretion to promote healing.
The patient with liver failure has had a liver transplant. What should the nurse teach the patient about care after the transplant?
- A. Alcohol intake is now okay.
- B. HBIG will be required to prevent rejection.
- C. Elevate the head 30 degrees to improve ventilation when sleeping.
- D. Monitor closely for infection because of the immunosuppressive medication.
Correct Answer: D
Rationale: The correct answer is D because patients who undergo liver transplant are put on immunosuppressive medication to prevent rejection. This medication weakens the immune system, making the patient more susceptible to infections. Monitoring closely for signs of infection is crucial to prevent complications.
Choice A is incorrect because alcohol intake is not recommended after a liver transplant as it can further damage the new liver. Choice B is incorrect because HBIG (Hepatitis B Immunoglobulin) is typically given to prevent hepatitis B recurrence, not rejection. Choice C is incorrect as elevating the head has no direct correlation with post-liver transplant care.