Which of the following is dual gland?a)Pancreasb)Liverc)gastric glandd)salivary glandCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The pancreas is referred to as a dual gland because it has two sets glandular cells that help it carry out both endocrine and exocrine functions. The first set of cells, the islets of Langerhans, carry out the function of secreting insulin, an hormone that regulates blood sugar levels. On the other hand, its exocrine functions is that of secreting pancreatic enzymes that help in the process of digestion.
Therefore option 'A' is correct.

Answer

Answer

Introduction:
A dual gland refers to a gland that has both exocrine and endocrine functions. Exocrine glands secrete substances into ducts that carry them to specific locations, while endocrine glands release hormones directly into the bloodstream. The pancreas is an example of a dual gland.

Explanation:
The pancreas is a dual gland because it performs both exocrine and endocrine functions.

Exocrine Function:
The exocrine function of the pancreas involves the production and secretion of digestive enzymes. These enzymes are released into the small intestine through a duct system. The digestive enzymes help in the breakdown of carbohydrates, proteins, and fats, facilitating their absorption in the digestive system.

Endocrine Function:
The endocrine function of the pancreas involves the production and secretion of hormones, primarily insulin and glucagon. These hormones are released directly into the bloodstream and play a crucial role in regulating blood sugar levels.

- Insulin: Insulin is responsible for lowering blood sugar levels by facilitating the uptake of glucose into cells. It promotes the storage of glucose as glycogen in the liver and muscles, reducing the concentration of glucose in the bloodstream.
- Glucagon: Glucagon acts opposite to insulin and increases blood sugar levels. It stimulates the breakdown of glycogen into glucose in the liver, releasing glucose into the bloodstream.

The pancreas contains specialized clusters of cells called islets of Langerhans. These islets consist of different types of cells, including alpha cells that produce glucagon and beta cells that produce insulin.

Conclusion:
The pancreas is considered a dual gland because it performs both exocrine and endocrine functions. Its exocrine function involves the secretion of digestive enzymes into the small intestine, while its endocrine function involves the production and release of hormones, primarily insulin and glucagon, into the bloodstream.

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