Pathology: respiratory system questions with verified answers (graded A)

Cystic fibrosis - Answers--is characterized by the secretion of excessively viscous mucus by all the exocrine glands; it also affects pancreas and digestive system. The most common of inherited diseases. It is caused by a defective gene in the middle of chromosome 7. -Ninety percent of the morbidity and mortality related to cystic fibrosis occurs as a result of respiratory involvement. Shows up on chest x-rays as increased radiodensities in specific lung regions, along with hyperinflation. Y—My Life Expectancy CF is the most common lethal genetic disease for white children despite increasing life spans to the age of 20 years or older because of improved treatments. -Progressive chest x-rays show gradual bronchial thickening and hyperinflation that progress to cyst formation, scarring, pulmonary artery and right ventricular enlargement, and overinflation of the lung and chest wall.