Nokea
Which of these is a characteristic of the small intestine?
- A. It has no villi.
- B. It is the site of the majority of digestion.
- C. It is the primary site for absorption of water.
- D. It produces bile.
Correct Answer: B
Rationale: The correct answer is B because the small intestine is where the majority of digestion occurs, including the breakdown of proteins, carbohydrates, and fats. This is facilitated by enzymes and bile produced by other organs. Villi in the small intestine increase surface area for absorption, making choice A incorrect. Absorption of water primarily occurs in the large intestine, so choice C is incorrect. Bile is produced by the liver and stored in the gallbladder, not the small intestine, making choice D incorrect. Thus, the small intestine's role in digestion makes it the correct characteristic.
You may also like to solve these questions
Where are most fat-digesting enzymes produced?
- A. small intestine
- B. gallbladder
- C. liver
- D. pancreas
Correct Answer: D
Rationale: The correct answer is D: pancreas. The pancreas produces most fat-digesting enzymes, such as lipase, which help break down fats in the small intestine. The liver produces bile, stored in the gallbladder, which aids in fat digestion but doesn't directly produce fat-digesting enzymes. The small intestine primarily absorbs nutrients rather than producing fat-digesting enzymes. Therefore, the pancreas is the main source of fat-digesting enzymes in the digestive system.
After an esophageal surgery, a client exhibited the symptoms of dyspne What should a nurse do to minimize dyspnea?
- A. Ensure the intake of soft foods or high-calorie, high-protein semiliquid foods
- B. Advise avoidance of foods that contain significant air or gas
- C. Ensure frequent, small meals and discourage lying down immediately after eating
- D. Instruct to take liquid supplements between meals
Correct Answer: C
Rationale: Small, frequent meals and avoiding lying down after eating help prevent reflux and aspiration, which can contribute to dyspnea.
Regarding HCL:
- A. it inhibits pepsinogen.
- B. it helps in absorption of iron.
- C. it helps in absorption of vitamin B12.
- D. is secreted in response to sympathetic stimulation.
Correct Answer: B
Rationale: Step 1: HCL helps in the digestion of food by creating an acidic environment in the stomach.
Step 2: This acidic environment aids in the breakdown of food components, including iron.
Step 3: Iron absorption is enhanced in the presence of HCL.
Conclusion: Choice B is correct as HCL helps in the absorption of iron. Choices A, C, and D are incorrect as HCL does not inhibit pepsinogen, aid in absorption of vitamin B12, or secreted in response to sympathetic stimulation.
Which cells in the small intestine may help protect the intestinal epithelium from bacteria?
- A. absorptive cells
- B. goblet cells
- C. granular cells
- D. endocrine cells
Correct Answer: C
Rationale: Granular cells, also known as Paneth cells, produce antimicrobial peptides to protect the intestinal epithelium from bacteria. These peptides have antimicrobial properties that help prevent bacterial overgrowth and maintain intestinal homeostasis. Absorptive cells are primarily responsible for nutrient absorption, while goblet cells secrete mucus for lubrication. Endocrine cells produce hormones that regulate various physiological processes. Therefore, the correct answer is C, as granular cells play a direct role in protecting the intestinal epithelium from bacteria.
After abdominal surgery, your patient has a severe coughing episode that causes wound evisceration. In addition to calling the doctor, which intervention is most appropriate?
- A. Irrigate the wound & organs with Betadine
- B. Cover the wound with a saline-soaked sterile dressing.
- C. Apply a dry sterile dressing & binder
- D. Push the organs back & cover with moist sterile dressings.
Correct Answer: B
Rationale: The correct answer is B: Cover the wound with a saline-soaked sterile dressing. This intervention helps maintain a moist environment for wound healing and prevents further contamination. Irrigating with Betadine (A) can be harmful to tissues. Applying a dry sterile dressing (C) can lead to desiccation and delays healing. Pushing organs back (D) should only be done by a medical professional to avoid causing further harm.