This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Which of the following exocrine glandular ducts are not obstructed in cystic fibrosis \nSelect and explain. \nA. Pancreas, B. Lung, C. Sweat gland, D. All of above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Abnormal Characteristics of CF Patients * The ducts of the mucus secreting glands are obstructed because of high viscosity of these secretions which leads to glandular dilatation and destruction. * The ducts of sweat glands are free from obstruction because the sweat gland has abnormal concentrations of inorganic ions, rather than glandular obstruction with thick mucus. Method of diagnosing CF:- Quantitative pilocarpine iontophoresis sweat test. * Airway obstruction causes bronchiectasis and atelectasis * Obstruction in pancreatic duct causes pancreatitis and malabsorption * Obstruction of bile ducts leads to obstructive jaundice. Ref:- Robbins pathological basis of disease 9th Edition; Pg Num:- 466', 'role': 'assistant'}]