ATI RN
Digestive System Exam Questions Questions
Question 1 of 5
Which statement about chemical digestion in the human alimentary canal is correct?
Correct Answer: C
Rationale: Protein digestion begins in the stomach with pepsin and is completed in the ileum by proteolytic enzymes from the pancreas and intestinal mucosa.
Question 2 of 5
Which of these human teeth are used for grinding?
Correct Answer: D
Rationale: Molars are flat, broad teeth specialized for grinding food.
Question 3 of 5
Which layer of GI tract forms the innermost lining and continuously secretes mucus?
Correct Answer: D
Rationale: The mucosa is the innermost layer of the GI tract, lined with epithelial cells that secrete mucus to protect the tract and lubricate food passage.
Question 4 of 5
Which of the following glands produces saliva?
Correct Answer: D
Rationale: The parotid gland is one of the major salivary glands that produce saliva, which initiates starch digestion and lubricates food.
Question 5 of 5
Which process matches the definition: The process of taking food, drink or other substance into the body by swallowing or absorbing it?
Correct Answer: B
Rationale: Ingestion is the act of taking food into the body via the mouth.