ATI RN
Digestive System Mcq Questions Questions
Question 1 of 5
What are the substrate and end-products of digestion by the enzyme lipase?
Correct Answer: A
Rationale: Lipase hydrolyzes triglycerides into their component fatty acids and glycerol.
Question 2 of 5
Which structure helps to prevent a bolus of food from entering the trachea during deglutition (swallowing)?
Correct Answer: D
Rationale: The epiglottis is a flap of cartilage that covers the trachea during swallowing, preventing food from entering the airway.
Question 3 of 5
The primary site for absorption of water by the digestive system is the:
Correct Answer: B
Rationale: The colon (large intestine) is the primary site for water absorption, consolidating waste into feces.
Question 4 of 5
Which process matches the definition: The uptake of substances by the GI tract?
Correct Answer: A
Rationale: Absorption is the process by which nutrients are taken up from the GI tract into the bloodstream.
Question 5 of 5
Ventral [lower] surface of hard palate is covered by:
Correct Answer: B
Rationale: The ventral surface of the hard palate is covered by stratified squamous epithelium that is keratinized (often parakeratinized) to withstand mechanical stress from food. Pseudostratified columnar epithelium is found in respiratory regions, not here.