Question

Select and rewrite the correct answer to the given statement from the four choices given below.

Insulin is secreted by:

• A. Beta cells of pancreas
• B. Alpha cells of pancreas
• C. Delta cells of pancreas
• D. None of these

Answer 1

The correct option is A

Beta cells of pancreas

The correct option is A.

Explanation of the correct option:

1. The pancreas is a mixed gland i.e it has both endocrine and exocrine parts and their secretions.
2. It has groups of cells known as islets of Langerhans which is the endocrine part of the pancreas.
3. Islets of Langerhans consist of Alpha, Beta, and Delta cells.
4. Alpha cells secrete glucagon, beta cells secrete insulin, and delta cells secrete somatostatin hormone.

Explanation of the incorrect options:

Option B:

Alpha cells of the pancreas secret the glucagon hormone which regulates our blood sugar level by increasing it when it falls too low.

Option C:

Delta cells of the pancreas secret somatostatin which serves to block the secretions of other hormones like insulin, glucagon, etc.

Final answer: Insulin is secreted by beta cells of the pancreas.