Cystic Fibrosis

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What is Cystic fibrosis caused by?
A recessive allele
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What mutation causes Cystic fibrosis?
A mutation in the gene that codes for CFTR gene
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What is CFTR?
a carrier protein which transports chloride ions out of cells
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CFTR is a carrier protein which transports what?
Chloride ions out of cells and into mucus
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Mutant CFTR is what?
much less efficient at transporting chloride ions out of the cell
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What moves less?
water by osmosis
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What does it make the mucus of people with CF like?
abnormally thick and sticky
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What does this thick and sticky mucus cause?
problems in the respiratory, digestive and reproductive system
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What does the mucus do in the respiratory sytem?
prevents lung infections by trapping microorganisms
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The mucus including microorganisms is then what?
transported towards the throat by cilla
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Why are the cilla unable to move?
because the mucus towards the throat becomes thick and sticky
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What builds up in the airways?
mucus
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What can't take place?
gas exchange
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During the digestive system, What blocks?
the tube that connects the pancreas to the small intestine
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What is prevented?
What is prevented?
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digestive enzymes produced by the pancreas from reaching the small intestine, What does this make?
Difficult to digest food, fewer nutrients are absorbed
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What can mucus cause?
cysts to form in pancreas
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What do these inhibit?
the production of enzymes
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Which reduce?
the ability to digest food and absorb nutrients
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The mucus lining the small intestine is what?
abnormally thick
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What does mucus block in the male reproductive system?
tubes connecting the testicles to the penis
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What does mucus block in the female reproductive system?
thickened cervical mucus, prevents sperm from reaching the egg
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Other cards in this set

Card 2

Front

What mutation causes Cystic fibrosis?

Back

A mutation in the gene that codes for CFTR gene

Card 3

Front

What is CFTR?

Back

Preview of the front of card 3

Card 4

Front

CFTR is a carrier protein which transports what?

Back

Preview of the front of card 4

Card 5

Front

Mutant CFTR is what?

Back

Preview of the front of card 5
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