What is the primary function of the islets of Langerhans in the pancreas?
1. Secretion of enzymes
2. Acting as exocrine
3. Secretion of glucagon and insulin
4. Absorption of insulin
Correct Answer: 3
Rationale 1: Secretion of enzymes relates to the exocrine function, which is to release enzymes for chemical digestion of nutrients.
Rationale 2: Other cells of the pancreas are responsible for exocrine function.
Rationale 3: The cluster of cells within the pancreas (islets of Langerhans) is responsible for the endocrine function, which is to release insulin and glucagon.
Rationale 4: These are secretory cells, not absorptive cells.
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