Identify the cells whose secretion protects the lining of the gastro-intestinal tract from various enzymes?
Options:
- Duodenal Cells
- Oxyntic cells
- Goblet Cells
- Chief Cells
Answer (2)
Goblet Cells are responsible for secreting mucus that protects the lining of the gastro-intestinal tract from digestive enzymes. Other options, like duodenal cells, oxyntic cells, and chief cells, do not perform this protective function to the same extent. Therefore, Goblet Cells are the correct answer.
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In the context of the gastro-intestinal tract, the cells responsible for protecting the lining from various enzymes are the Goblet Cells .
Goblet cells are specialized epithelial cells found in the lining of the gastro-intestinal tract, particularly abundant in the mucous membranes of the stomach and intestines. Their main function is to secrete mucus.
What is Mucus?
Mucus is a slippery, gel-like substance that forms a protective barrier on the surface of the mucosa. It plays a critical role in:
Protection: Mucus protects the underlying cells from the harsh environments within the gastro-intestinal tract, such as digestive enzymes and stomach acids.
Lubrication: It helps in the smooth passage of food through the intestines.
Why is this Important?
The gastro-intestinal tract is exposed to numerous enzymes that aid in digestion, such as pepsin and gastric juices that have a very low pH. Without the protective mucus layer, these enzymes and acids could damage the lining of the stomach and intestines, leading to ulcers and other gastrointestinal issues.
Conclusion:
Therefore, among the given options, Goblet Cells are the cells whose secretion helps protect the lining of the gastro-intestinal tract from the damaging effects of various enzymes and acidic conditions. This makes them crucial for maintaining the overall health and functionality of the digestive system.
