ATI RN
Digestive System Exam Questions Questions
Question 1 of 5
Food tests were carried out on four different substances. Which substance contained both protein and reducing sugar?
Correct Answer: A
Rationale: Substances testing positive for both the biuret test (protein) and Benedict's test (reducing sugar) indicate the presence of both protein and reducing sugars.
Question 2 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 3 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 4 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.
Question 5 of 5
How is food processed to distribute nutrients to the body's cells?
Correct Answer: A
Rationale: Food is ingested (taken in), digested (broken down), absorbed (taken into blood), and assimilated (distributed to cells).