Nokea
Which of the following hormones stimulates the release of gastric acid?
- A. gastrin
- B. secretin
- C. insulin
- D. cholecystokinin
Correct Answer: A
Rationale: The correct answer is A: gastrin. Gastrin is a hormone produced by G cells in the stomach lining that stimulates the release of gastric acid. It acts directly on parietal cells to increase acid secretion. Secretin (B) stimulates pancreatic bicarbonate secretion, not gastric acid. Insulin (C) regulates blood sugar levels, not gastric acid secretion. Cholecystokinin (D) stimulates the release of bile from the gallbladder and pancreatic enzymes, not gastric acid.
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Amylase secreted by the salivary glands into the oral cavity starts the digestion of:
- A. Proteins
- B. Lipids
- C. Starch
- D. Amino acids
Correct Answer: C
Rationale: The correct answer is C: Starch. Amylase is an enzyme that breaks down starch into maltose in the oral cavity. This process is the initial step in carbohydrate digestion. Proteins are primarily digested in the stomach by pepsin. Lipids are broken down by lipase in the small intestine. Amino acids are the end product of protein digestion, not the substrate for amylase. Therefore, the correct answer is C as amylase specifically targets starch for digestion.
Which of these digestive processes occurs in the mouth?
- A. chemical digestion of proteins
- B. mechanical digestion of food
- C. chemical digestion of starch
- D. all of the above
Correct Answer: C
Rationale: The correct answer is C: chemical digestion of starch. In the mouth, salivary glands secrete enzymes like amylase to break down starch into simpler sugars. This process initiates the digestion of carbohydrates. Mechanical digestion (Choice B) occurs in the mouth through chewing and mixing food with saliva, but it does not involve chemical breakdown. Chemical digestion of proteins (Choice A) primarily occurs in the stomach and small intestine with the help of enzymes like pepsin and trypsin. Choice D is incorrect because not all the processes listed occur in the mouth.
A nurse is assessing a client who is 3 days postoperative following abdominal surgery and notes the absence of bowel sounds, abdominal distention, and the client passing no flatus. Which of the following conditions should the nurse suspect?
- A. Ulcerative colitis
- B. Cholecystitis
- C. Paralytic ileus
- D. Wound dehiscence
Correct Answer: C
Rationale: The correct answer is C: Paralytic ileus. After abdominal surgery, the bowel can temporarily stop functioning due to anesthesia, handling of the intestines, or inflammation. This leads to absent bowel sounds, distention, and no flatus passage. Ulcerative colitis (A) is a chronic inflammatory bowel disease, not related to postoperative findings. Cholecystitis (B) is inflammation of the gallbladder, typically presenting with right upper quadrant pain. Wound dehiscence (D) is the separation of surgical incision edges, not related to bowel function.
A 22-year-old patient calls the outpatient clinic complaining of nausea and vomiting and right lower abdominal pain. What should the nurse advise the patient to do?
- A. Use a heating pad to relax the muscles at the site of the pain.
- B. Drink at least 2 quarts of juice to replace the fluid lost in vomiting.
- C. Take a laxative to empty the bowel before examination at the clinic.
- D. Have the symptoms evaluated by a health care provider right away.
Correct Answer: D
Rationale: The correct answer is D because the patient is experiencing symptoms that could indicate appendicitis, a serious condition that requires immediate medical attention. Nausea, vomiting, and right lower abdominal pain are classic signs of appendicitis. Advising the patient to have the symptoms evaluated by a healthcare provider right away is crucial to prevent potential complications like a ruptured appendix.
Choice A is incorrect because using a heating pad may worsen the condition if it is indeed appendicitis. Choice B is incorrect because drinking juice may not address the underlying cause of the symptoms. Choice C is incorrect because taking a laxative is not recommended as it could potentially aggravate the condition.
In summary, choice D is the correct answer as it prioritizes the patient's health and safety by seeking prompt medical evaluation for the concerning symptoms.
Metabolic rate is high in the following Except:
- A. Pregnancy.
- B. Sleep.
- C. Male than female of the same body surface area.
- D. Walking than resting state.
Correct Answer: B
Rationale: The correct answer is B: Sleep. During sleep, the body's metabolic rate decreases as it enters a state of rest and recovery. Pregnancy (A) requires increased energy expenditure for fetal development. Males generally have higher metabolic rates than females (C) due to higher muscle mass. Walking (D) requires more energy than resting, leading to a higher metabolic rate. In summary, sleep is the exception as it lowers metabolic rate compared to the other activities listed.