Question

Which of the following exocrine glandular ducts are not obstructed in cystic fibrosis:

• A. Pancreas
• B. Lung
• C. Sweat gland
• D. All of above

Answer 1

The Correct Option is C

To determine which exocrine glandular ducts are not obstructed in cystic fibrosis, it is essential to understand how cystic fibrosis affects different glands:

• Cystic fibrosis is a genetic disorder that affects the secretion of exocrine glands, leading to thick, sticky mucus production, which commonly obstructs ducts in various organs.
• Pancreas: In cystic fibrosis, the pancreatic ducts often become blocked due to thick mucus, leading to digestive enzyme insufficiency.
• Lung: The respiratory glands in the lungs are also frequently obstructed, causing respiratory complications.
• Sweat gland: Interestingly, the sweat glands are not obstructed; instead, they produce sweat with a higher salt content. This is because the chloride channels are defective, not due to mucus obstruction.

Therefore, among the options given, the glandular ducts not obstructed by mucus in cystic fibrosis are the Sweat glands.