ATI LPN
Upper Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
If sodium bicarbonate (NaHCO3) is not released as part of the pancreatic juice, the pH of the
Correct Answer: D
Rationale: Sodium bicarbonate neutralizes acidic chyme in the small intestine; without it, the small intestine remains acidic, making D correct.
Question 2 of 5
Which of the following enzymes digest proteins?
Correct Answer: C
Rationale: Pepsin digests proteins in the stomach, making C correct.
Question 3 of 5
The presence of large numbers of mitochondria in the cells lining the small intestine allows it to
Correct Answer: C
Rationale: Mitochondria provide energy for active glucose absorption, making C correct.
Question 4 of 5
Peristalsis may refer to the
Correct Answer: D
Rationale: Peristalsis is the rhythmic contraction moving food through the esophagus, making D correct.
Question 5 of 5
Where does the chemical digestion of protein occur?
Correct Answer: B
Rationale: Protein digestion occurs in the stomach (pepsin) and small intestine (trypsin), making B correct.