ATI LPN
Questions About Gastrointestinal System Questions
Question 1 of 5
The digestive system processes food into usable and unusable materials. The usable materials are sent to the body's cells as food. What happens to unusable materials?
Correct Answer: C
Rationale: Unusable materials (waste) move to the large intestine for water absorption and eventual disposal as feces, making C correct. The pancreas produces enzymes, the right ventricle is heart-related, and the small intestine absorbs nutrients, not stores waste.
Question 2 of 5
What structure is found between organ X and organ Y?
Correct Answer: C
Rationale: Assuming X is stomach and Y is duodenum, the pyloric sphincter separates them, making C correct.
Question 3 of 5
Which of the following structures secrete hydrochloric acid?
Correct Answer: B
Rationale: Gastric glands in the stomach secrete HCl, making B correct.
Question 4 of 5
What structure prevents food from entering the trachea?
Correct Answer: C
Rationale: The epiglottis covers the trachea during swallowing, making C correct.
Question 5 of 5
Which enzyme is most effective at pH 2.5?
Correct Answer: B
Rationale: Pepsin functions optimally at pH 2-3 in the stomach, making B correct.