Cystic Fibrosis
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Questions and Answers

Which gene mutation is most commonly associated with Cystic Fibrosis?

  • CFTR gene mutation
  • Autosomal recessive gene mutation
  • ΔF508 or Phe508del mutation (correct)
  • Chromosome location 7q31 mutation

What is the function of the CFTR gene?

  • Codes for chloride ion transport channel (correct)
  • Results in intestinal obstruction
  • Causes obstruction and chronic lung infection
  • Leads to pancreatic insufficiency

Which of the following is a symptom of Cystic Fibrosis?

  • Intestinal obstruction
  • Hepatic cirrhosis (correct)
  • Higher incidence of pancreatic diseases
  • Higher incidence of respiratory diseases

How is Cystic Fibrosis inherited?

<p>Autosomal recessive (D)</p> Signup and view all the answers

What is the impact of Cystic Fibrosis on the pancreas?

<p>Pancreatic insufficiency (B)</p> Signup and view all the answers

What is the effect of the CFTR gene mutation on the epithelial lining?

<p>Thick secretions causing obstruction and infection (A)</p> Signup and view all the answers

What is the chromosomal location of the CFTR gene?

<p>7q31 (A)</p> Signup and view all the answers

Which mutation is the most common cause of cystic fibrosis?

<p>F508del (D)</p> Signup and view all the answers

What is the primary function of CFTR protein?

<p>Chloride Conductance Channel (B)</p> Signup and view all the answers

Which of the following is a secondary function of CFTR protein?

<p>Regulation of bicarbonate ions (B)</p> Signup and view all the answers

What is the effect of CFTR mutations on chloride secretion into the lumen?

<p>Decreased secretion (D)</p> Signup and view all the answers

Which genetic modifier may affect the pulmonary manifestations of cystic fibrosis?

<p>Mannose-binding lectin 2 (C)</p> Signup and view all the answers

What is the consequence of CFTR loss of function in sweat ducts?

<p>Salt depletion and heat stroke (C)</p> Signup and view all the answers

What is the normal function of CFTR in respiratory and intestinal cells?

<p>Active secretion of chloride into the lumen (C)</p> Signup and view all the answers

What are the pulmonary changes associated with cystic fibrosis?

<p>Mucopurulent secretions and progressive lung damage (C)</p> Signup and view all the answers

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