ATI LPN
Chapter 15 The Gastrointestinal System Review Questions Questions
Question 1 of 5
Which diagnostic test is most commonly used to confirm the diagnosis of gastritis?
Correct Answer: B
Rationale: The correct answer is B: Endoscopy with biopsy. This is the most commonly used test to confirm gastritis as it allows direct visualization of the stomach lining and collection of tissue samples for biopsy. Barium swallow (A) is used to diagnose structural abnormalities, not gastritis. Abdominal ultrasound (C) is more useful for evaluating organs like the liver and gallbladder. Stool culture (D) is used to identify bacterial infections in the stool, not diagnose gastritis.
Question 2 of 5
Which two systems are most directly involved in providing molecules needed for the synthesis of fats in human cells?
Correct Answer: A
Rationale: The correct answer is A (digestive and circulatory). The digestive system breaks down food into molecules like fatty acids, which are needed for fat synthesis. The circulatory system then transports these molecules to cells for fat synthesis. The other choices are incorrect because the excretory system is involved in waste removal, the immune system defends against pathogens, the muscular system supports movement, and the reproductive system is responsible for reproduction, none of which are directly related to providing molecules for fat synthesis.
Question 3 of 5
What is the digestive system?
Correct Answer: C
Rationale: The correct answer is C: The body's food-processing system. The digestive system is responsible for processing and breaking down food into nutrients that can be absorbed by the body. This process involves various organs such as the stomach, intestines, and liver. It is not the body's breathing system (A), nervous system (B), or blood-transporting system (D) because those systems have different functions and are not directly involved in food processing.
Question 4 of 5
Which of the following does NOT manufacture digestive juices?
Correct Answer: B
Rationale: The correct answer is B: Kidneys. The kidneys do not manufacture digestive juices. The liver produces bile to aid in digestion, the stomach produces gastric juices, and the pancreas produces digestive enzymes. The kidneys, however, are responsible for filtering blood, regulating fluid balance, and producing urine, not digestive juices. Therefore, option B is the correct answer.
Question 5 of 5
In a demonstration, 10 grams of raw meat were suspended in an enzyme solution. After several hours the meat was weighed and was found to have a mass of 3 grams. The solution most likely contained
Correct Answer: B
Rationale: The correct answer is B: pepsin. Pepsin is a digestive enzyme that breaks down proteins into smaller peptides. In this demonstration, the decrease in mass of the meat from 10g to 3g suggests protein digestion occurred. Bile (A) emulsifies fats, maltose (C) breaks down carbohydrates, and amylase (D) also breaks down carbohydrates, so they wouldn't cause the observed mass change.