Nokea
The stomach, small intestine and large intestine are lined by this epithelium.
- A. simple squamous
- B. stratified squamous
- C. simple columnar
- D. pseudostratified columnar
Correct Answer: C
Rationale: The correct answer is C: simple columnar epithelium. This type of epithelium is found in the stomach, small intestine, and large intestine. Simple columnar epithelium is ideal for absorption and secretion due to its tall, column-like shape and presence of microvilli. It provides a large surface area for nutrient absorption. Simple squamous epithelium (choice A) is thin and is found in areas where filtration or diffusion occurs, like the lungs. Stratified squamous epithelium (choice B) is found in areas subject to mechanical stress, such as the skin. Pseudostratified columnar epithelium (choice D) is typically found in the respiratory tract and has cilia for moving mucus.
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Treatment of the patient with appendicitis includes:
- A. Transfusion to replace blood loss.
- B. Bowel prep for cleansing.
- C. Surgical removal of appendix.
- D. Medications to lower pH within the stomach.
Correct Answer: C
Rationale: The correct answer is C: Surgical removal of appendix. Appendicitis is inflammation of the appendix, which requires surgical intervention (appendectomy) to prevent rupture and potential life-threatening complications. Transfusion (A) is not a standard treatment for appendicitis unless severe bleeding occurs post-surgery. Bowel prep (B) is unnecessary for appendicitis treatment as it is not related to colon cleansing. Medications to lower stomach pH (D) are used to treat conditions like acid reflux, not appendicitis. In summary, surgical removal of the inflamed appendix is the definitive treatment for appendicitis to prevent complications.
A nurse is providing instructions for a 52-year-old client who is scheduled for a colonoscopy. The client reports that he has not had the procedure before and is very anxious about feeling pain during the procedure. Which of the following responses by the nurse is appropriate?
- A. Don't worry; most clients dislike the prep more than the procedure itself.'
- B. Before the examination, your provider will give you a sedative that will make you sleepy.'
- C. I know you're anxious, but this procedure is recommended for people your age.'
- D. After you have signed the consent form, we can talk more about this.'
Correct Answer: B
Rationale: Step 1: Providing a sedative before the colonoscopy is appropriate as it helps reduce anxiety and discomfort during the procedure.
Step 2: Sedatives induce relaxation and drowsiness, making the client feel sleepy and less likely to experience pain.
Step 3: Addressing the client's anxiety by mentioning the sedative shows empathy and reassurance.
Step 4: This option focuses on addressing the client's concern about pain during the procedure effectively.
Summary:
- Option A dismisses the client's concerns and does not provide a solution.
- Option C acknowledges the anxiety but does not offer a specific solution.
- Option D delays addressing the client's anxiety without providing immediate reassurance or information.
The presence of bilirubin in bile is important because:
- A. It gives bile its color
- B. It leads to production of stercobilinogen in the intestine
- C. It facilitates absorption of lipids
- D. It gives faces their color
Correct Answer: A
Rationale: The correct answer is A: It gives bile its color. Bilirubin is a pigment produced from the breakdown of hemoglobin in the liver, giving bile its characteristic yellow-green color. This is important for bile to aid in the emulsification and digestion of fats. Choices B and D are incorrect as stercobilinogen is produced from bilirubin in the intestine, contributing to stool color, not bile color. Choice C is incorrect as bile salts, not bilirubin, facilitate the absorption of lipids in the small intestine.
Cimetidine and a calcium-containing antacid preparation administered in an appropriate dosage regimen for treating peptic ulcer differ in that:
- A. Only the calcium-containing antacid may increase gastric acid secretion.
- B. Only cimetidine is likely to cause an increase in urinary pH.
- C. Only cimetidine is likely to produce a laxative effect.
- D. Only cimetidine can prevent the rise in gastric pH after the consumption of a meal.
Correct Answer: A
Rationale: The correct answer is A because only the calcium-containing antacid may increase gastric acid secretion. This is because calcium-containing antacids can stimulate the release of gastrin, which in turn increases gastric acid secretion. Choices B, C, and D are incorrect because cimetidine, not a calcium-containing antacid, is the one that can cause an increase in urinary pH, produce a laxative effect, and prevent the rise in gastric pH after a meal, respectively. Therefore, A is the only statement that accurately distinguishes between cimetidine and a calcium-containing antacid in the context of treating peptic ulcers.
The stomach contractions, which move the chyme from near the periphery of the stomach toward the pyloric sphincter, are called
- A. the pyloric pump.
- B. peristaltic waves.
- C. mixing waves.
- D. mass movements.
Correct Answer: C
Rationale: The correct answer is C: mixing waves. Mixing waves are the stomach contractions that help mix the chyme near the periphery of the stomach and move it towards the pyloric sphincter for further digestion. Peristaltic waves (B) are rhythmic contractions that propel food through the digestive system, not specifically in the stomach. The pyloric pump (A) is not a recognized term in gastrointestinal physiology. Mass movements (D) refer to contractions in the large intestine that move feces towards the rectum, not in the stomach.