Explain why a gene mutation affects gas exchange in a person with cystic fibrosis.
Cystic fibrosis is an inherited disorder that mostly affects people of northern European ancestry and causes severe damage to the lungs, digestive system and other organs. It affects the cells that produce mucus, sweat and digestive juices, causing these secretions to become viscous and sticky. As result, tubes and passageways, particularly in the lungs and pancreas, become congested and blocked.
Cystic fibrosis is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, and is inherited in an autosomal recessive manner, meaning that a person needs to have two copies of the defective gene to develop the disorder.
Answer and Explanation:
The cystic fibrosis transmembrane conductance regulator (CFTR) gene encodes a chloride ion channel that is expressed on ion-transporting cells in the...
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from Pathophysiology TextbookChapter 9 / Lesson 16