ATI LPN
Chapter 15 The Gastrointestinal System Review Questions Questions
Question 1 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 digestive system breaks down food into fatty acids and glycerol, and the circulatory system transports these to cells for fat synthesis. Excretory removes waste, not nutrients. Immune and muscular and reproductive systems are unrelated to fat synthesis.
Question 2 of 5
Which of the following does NOT manufacture digestive juices?
Correct Answer: B
Rationale: The liver , stomach , and pancreas produce digestive juices (bile, gastric juice, pancreatic enzymes), but kidneys filter blood for urine, not digestive juices, making B correct.
Question 3 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: Pepsin, a protease, breaks down proteins in meat, reducing its mass, making B correct; bile emulsifies, maltose is a sugar, and amylase digests starch.
Question 4 of 5
What enzyme breaks down proteins into peptides in structure W?
Correct Answer: C
Rationale: Assuming W is the stomach, pepsin digests proteins into peptides, making C correct.
Question 5 of 5
Which hormone stimulates the release of pancreatic juice?
Correct Answer: C
Rationale: Secretin triggers pancreatic juice release to neutralize chyme, making C correct.