ATI LPN
NCLEX Questions on Gastrointestinal System Questions
Question 1 of 5
Which of the following enzyme breaks down starches to maltose.
Correct Answer: A
Rationale: The correct answer is A: Amylase. Amylase is an enzyme that specifically breaks down starches into maltose through hydrolysis. It is produced in the salivary glands and pancreas. Lipase (B) breaks down lipids, Trypsinogen (C) is a precursor to trypsin which digests proteins, and Pepsin (D) is an enzyme that breaks down proteins in the stomach. Therefore, choices B, C, and D are incorrect for breaking down starches into maltose.
Question 2 of 5
What is the role of the small intestine's MALT?
Correct Answer: D
Rationale: MALT (mucosa-associated lymphoid tissue) provides immune defense.
Question 3 of 5
Which sphincter is associated with the stomach
Correct Answer: B
Rationale: The pyloric sphincter regulates gastric emptying.
Question 4 of 5
Waves of muscular contractions that propel the contents of the digestive tract from one point to another is/are
Correct Answer: D
Rationale: Peristalsis propels food along the GI tract.
Question 5 of 5
The esophagus
Correct Answer: A
Rationale: The esophagus is a muscular tube; other options are incorrect.