2.1 - The Effects of CF on the Lungs Flashcards
What tube is responsible for allowing air to be drawn into the lungs?
The Trachea
What are the bronchi?
The trachea divides into two bronchi, carrying air to and from each lung
What are the narrow tubes that make up most of the lung network called?
Bronchioles
What is the site of gaseous exchange?
The Alveoli
What produces mucus?
Goblet cells in the walls of the airways
What is the function of mucus?
To trap any dust, debris or microorganisms in the airways.
How is mucus removed?
By the wave-like beating of cilia
Where are cilia found?
They cover the epithelial cells, which line the tubes of the gas exchange system
What is different about CF mucus?
It contains less water than usual, meaning it is sticky
What is wrong with having sticky mucus?
It makes it very difficult for it to be removed by the cilia.
What are the two major health problems caused by having sticky mucus?
- Increases chances of lung infection
- Makes gas exchange less efficient
What holds the epithelial lining cells in position in the airways?
Basement membrane
Where are epithelial cells found?
They line cavities and tubes and cover the surface of organs.
What is the tissue called that is made up of epithelial cells?
Epithelium
What is the basement membrane made of?
Protein fibres in a carbohydrate matrix