ATI LPN
Nutrition For PN Nursing ATI Questions
Question 1 of 5
Feces are composed mainly of bacteria, mucosal cells, mucus, and what else?
Correct Answer: C
Rationale: The correct answer is 'C: fiber.' Feces are primarily made up of indigestible material, such as fiber. Bile (choice
A) is produced by the liver to aid in digestion but is not a major component of feces. Enzymes (choice
B) are involved in digestion but are not a significant component of feces. Chyme (choice
D) is the semi-fluid mass of partially digested food that moves from the stomach to the small intestine and is not a major component of feces.
Question 2 of 5
What are the major sources of energy for the body?
Correct Answer: B
Rationale: The correct answer is B: Carbohydrates and fats. Carbohydrates are the body's primary and most efficient source of energy, providing fuel for daily activities. Fats are also a significant energy source, especially during times of prolonged or intense exercise. Proteins are primarily used for building and repairing tissues, not as a major energy source. Vitamins and minerals are essential for various bodily functions but do not serve as direct sources of energy.
Question 3 of 5
What substance acts as an emulsifier and helps absorb digested fat?
Correct Answer: A
Rationale: The correct answer is A: bile. Bile acts as an emulsifier, breaking down fats into smaller droplets to aid in digestion and absorption. Trypsin is a digestive enzyme that acts on proteins, not fats. Lipase is an enzyme that breaks down fats, but it doesn't act as an emulsifier. Cholecystokinin (CCK) is a hormone that stimulates the release of digestive enzymes, including lipase, but it is not directly involved in emulsification.
Question 4 of 5
Which hormone prevents excessive gastric activity?
Correct Answer: B
Rationale: The correct answer is Enterogastrone. Enterogastrone is a hormone that inhibits excessive gastric activity by slowing down stomach contractions and emptying. Gastrin (choice
A) stimulates gastric acid secretion, secretin (choice
C) regulates pH levels in the duodenum, and cholecystokinin (choice
D) stimulates the release of digestive enzymes and bile.
Question 5 of 5
What substance activates pepsinogen to pepsin?
Correct Answer: D
Rationale: The correct answer is D: Hydrochloric acid. Hydrochloric acid in the stomach plays a crucial role in converting pepsinogen into its active form, pepsin, which is necessary for digesting proteins. Bile (
Choice
A) is involved in the emulsification of fats, not in the activation of pepsinogen. Gastrin (
Choice
B) is a hormone that stimulates the secretion of gastric acid but does not directly activate pepsinogen. Secretin (
Choice
C) is a hormone that regulates the pH of the duodenum but is not responsible for the activation of pepsinogen.