Cystic Fibrosis 0.0 / 5 ? BiologyHealth, illness and diseaseA2/A-levelEdexcel Created by: francesca_321Created on: 15-02-16 15:21 What is Cystic fibrosis caused by? A recessive allele 1 of 22 What mutation causes Cystic fibrosis? A mutation in the gene that codes for CFTR gene 2 of 22 What is CFTR? a carrier protein which transports chloride ions out of cells 3 of 22 CFTR is a carrier protein which transports what? Chloride ions out of cells and into mucus 4 of 22 Mutant CFTR is what? much less efficient at transporting chloride ions out of the cell 5 of 22 What moves less? water by osmosis 6 of 22 What does it make the mucus of people with CF like? abnormally thick and sticky 7 of 22 What does this thick and sticky mucus cause? problems in the respiratory, digestive and reproductive system 8 of 22 What does the mucus do in the respiratory sytem? prevents lung infections by trapping microorganisms 9 of 22 The mucus including microorganisms is then what? transported towards the throat by cilla 10 of 22 Why are the cilla unable to move? because the mucus towards the throat becomes thick and sticky 11 of 22 What builds up in the airways? mucus 12 of 22 What can't take place? gas exchange 13 of 22 During the digestive system, What blocks? the tube that connects the pancreas to the small intestine 14 of 22 What is prevented? What is prevented? 15 of 22 digestive enzymes produced by the pancreas from reaching the small intestine, What does this make? Difficult to digest food, fewer nutrients are absorbed 16 of 22 What can mucus cause? cysts to form in pancreas 17 of 22 What do these inhibit? the production of enzymes 18 of 22 Which reduce? the ability to digest food and absorb nutrients 19 of 22 The mucus lining the small intestine is what? abnormally thick 20 of 22 What does mucus block in the male reproductive system? tubes connecting the testicles to the penis 21 of 22 What does mucus block in the female reproductive system? thickened cervical mucus, prevents sperm from reaching the egg 22 of 22
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