Nokea
What is the function of the gallbladder?
- A. producing bile
- B. storing bile
- C. secreting digestive enzymes
- D. neutralizing stomach acid
Correct Answer: B
Rationale: The correct answer is B: storing bile. The gallbladder functions to store bile produced by the liver and release it into the small intestine to aid in digestion. Bile helps in the breakdown of fats. Choices A, C, and D are incorrect because the gallbladder does not produce bile (the liver does), secrete digestive enzymes (pancreas does), or neutralize stomach acid (function of the stomach and duodenum).
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What should the nurse plan to teach about to a patient with Crohn's disease who has megaloblastic anemia?
- A. Iron dextran infusions
- B. Oral ferrous sulfate tablets
- C. Routine blood transfusions
- D. Cobalamin (B ) supplements
Correct Answer: D
Rationale: The correct answer is D: Cobalamin (B ) supplements. Patients with Crohn's disease often have malabsorption issues leading to megaloblastic anemia due to vitamin B12 deficiency. Cobalamin supplements are essential for treating such anemia. Iron dextran infusions (A) and oral ferrous sulfate tablets (B) are used to treat iron deficiency anemia, not megaloblastic anemia. Routine blood transfusions (C) do not address the underlying cause of megaloblastic anemia in Crohn's disease.
The pancreas produces all of the following except which one?
- A. amylase
- B. lipase
- C. insulin
- D. bile
Correct Answer: D
Rationale: The correct answer is D: bile. The pancreas produces digestive enzymes such as amylase and lipase to break down carbohydrates and fats. It also produces insulin to regulate blood sugar levels. Bile, however, is produced by the liver and stored in the gallbladder, not by the pancreas. Therefore, the pancreas does not produce bile. This makes option D the correct answer.
Na and other carrier ions facilitate absorption of
- A. amino acids and fructose
- B. fatty acids and glycerol
- C. fatty acids and glucose
- D. amino acids and glucose
Correct Answer: D
Rationale: The correct answer is D: amino acids and glucose. Na ions facilitate the absorption of these molecules in the small intestine through the process of co-transport with carrier proteins. Glucose and amino acids are primarily absorbed in the small intestine to be utilized by the body for energy and growth. Na ions help transport these molecules across the intestinal epithelium against their concentration gradients.
A: Amino acids and fructose - While Na ions do play a role in the absorption of amino acids, fructose is primarily absorbed through facilitated diffusion and does not require Na ions for absorption.
B: Fatty acids and glycerol - Fatty acids and glycerol are absorbed in the small intestine through a different mechanism called micelle formation and do not rely on Na ions for absorption.
C: Fatty acids and glucose - While Na ions do play a role in the absorption of glucose, fatty acids are primarily absorbed through micelle formation and do not require Na ions for absorption.
Which of the following structures would be considered retroperitoneal?
- A. pancreas
- B. stomach
- C. jejunum
- D. spleen
Correct Answer: A
Rationale: The correct answer is A: pancreas. The pancreas is considered retroperitoneal because it lies behind the peritoneum, specifically in front of the vertebral column. This positioning makes it retroperitoneal, unlike the stomach, jejunum, and spleen, which are intraperitoneal organs located within the peritoneal cavity. The retroperitoneal location of the pancreas helps protect it and provides structural support. It also allows for easier access during surgical procedures, as it is not surrounded by peritoneum on all sides like intraperitoneal organs.
A two-week-old boy develops persistent projectile vomiting. The most likely diagnosis is:
- A. pyloric stenosis
- B. esophageal atresia
- C. annular pancreas
- D. incomplete rotation of the gut
Correct Answer: A
Rationale: The correct answer is A: pyloric stenosis. In pyloric stenosis, there is hypertrophy of the pyloric sphincter muscle, leading to gastric outlet obstruction and projectile vomiting. This typically presents in infants around 2-6 weeks of age. Other choices (B) esophageal atresia presents with difficulty feeding and choking, (C) annular pancreas with duodenal obstruction, and (D) incomplete rotation of the gut with volvulus or obstruction due to malrotation. Pyloric stenosis is the most likely diagnosis in this scenario based on the age of the infant and the symptom of projectile vomiting.