What does this cell secret?

What does this cell secret?

• A. Keratin
• B. Sweat
• C. Mucus
• D. None of the above

Answer: (C)

Mucus is the secretion of goblet cells, which line many mucous membranes. These cells release mucins that combine with water to form mucus, a viscous protective coating that lubricates surfaces and traps dust, microbes, and irritants. This is why mucus is the correct secretion here. Keratin is a structural protein produced by keratinocytes and becomes part of the protective outer layers of skin, hair, and nails rather than a secreted mucus. Sweat is produced by sweat glands and serves mainly to cool the body and excrete wastes, not to form a mucus coating. So, the cell in question would secrete mucus.

Mucus is the secretion of goblet cells, which line many mucous membranes. These cells release mucins that combine with water to form mucus, a viscous protective coating that lubricates surfaces and traps dust, microbes, and irritants. This is why mucus is the correct secretion here.

Keratin is a structural protein produced by keratinocytes and becomes part of the protective outer layers of skin, hair, and nails rather than a secreted mucus. Sweat is produced by sweat glands and serves mainly to cool the body and excrete wastes, not to form a mucus coating.

So, the cell in question would secrete mucus.