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1. Which hormone is primarily responsible for stimulating the secretion of
pancreatic juices during digestion?
 A) Gastrin
 B) Secretin
 C) Cholecystokinin
 D) GIP
 Answer: B) Secretin
 Rationale: Secretin primarily stimulates the pancreas to release a
bicarbonate-rich fluid, which neutralizes the gastric acid entering the small
intestine from the stomach.
2. In cases of lactose intolerance, the deficiency of which enzyme would
be suspected?
 A) Amylase
 B) Lactase
 C) Lipase
 D) Pepsin
 Answer: B) Lactase
 Rationale: Lactase is necessary for the digestion of lactose, the sugar
found in milk. Deficiency leads to lactose intolerance, where undigested
lactose ferments in the colon, causing symptoms.
3. What is the primary function of the gallbladder in digestive processes?
 A) Production of bile
 B) Storage and concentration of bile
 C) Enzymatic digestion of proteins
 D) Absorption of nutrients
 Answer: B) Storage and concentration of bile
 Rationale: The gallbladder stores and concentrates bile produced by the
liver until it is needed for digestion of fats in the duodenum.
4. Which part of the gastrointestinal tract is primarily involved in water
absorption?
 A) Stomach
 B) Small intestine
 C) Large intestine (colon)
 D) Rectum
 Answer: C) Large intestine (colon)
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