A nurse is explaining the role of the CFTR protein in cystic fibrosis to a client. Which function of the CFTR protein should the nurse highlight?
"The CFTR protein regulates blood sugar levels in the body."
"CFTR facilitates the transport of oxygen in the bloodstream."
"The CFTR protein controls the movement of chloride ions and water across cell membranes."
"CFTR is responsible for the production of digestive enzymes in the pancreas."
The Correct Answer is C
A) Incorrect. The CFTR protein does not regulate blood sugar levels.
B) Incorrect. CFTR does not play a role in oxygen transport in the bloodstream.
C) Correct. The primary function of the CFTR protein is to regulate chloride ion and water movement across cell membranes, which is disrupted in individuals with CF.
D) Incorrect. The production of digestive enzymes in the pancreas is not a direct function of the CFTR protein.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) Incorrect. Genetic testing is used to confirm CF but does not directly measure chloride ion concentration in sweat.
B) Incorrect. Chest X-rays may be used to assess lung changes in individuals with CF but are not used to measure chloride ion concentration in sweat.
C) Incorrect. Pulmonary function tests assess lung function but do not directly measure chloride ion concentration in sweat.
D) Correct. The sweat chloride test measures the concentration of chloride ions in sweat and is commonly used to confirm CF. Elevated sweat chloride levels are indicative of CF.
Correct Answer is C
Explanation
A) Incorrect. The CFTR protein does not regulate blood sugar levels.
B) Incorrect. CFTR does not play a role in oxygen transport in the bloodstream.
C) Correct. The primary function of the CFTR protein is to regulate chloride ion and water movement across cell membranes, which is disrupted in individuals with CF.
D) Incorrect. The production of digestive enzymes in the pancreas is not a direct function of the CFTR protein.
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