emphysema Flashcards
What happens to the elasticity of the walls during emphysema?
The elasticity of the walls of the alveoli reduces during emphysema.
What does no elastin cause to the walls of alveoli to do?
No elastin causes the walls when moving inwards when the air is moving through at a low pressiure to collapse during exhalation.
What happens to the alveoli during emphysema?
The alveoli becomes more compliant.
What happens to the alveoli due to being compliant?
When breathing in the alveoli expands and becomes bigger.
Why does the alveoli expand?
Due,to the lack of elastin.
What happens to the alveoli which has expanded during exhalation?
The alveoli holds on to the air,instead of expelling the air in exhalation.
What are the walls of the alveoli known as?
Septa
What happens to the walls of alveoli?
They collapse/breakdown.
What happens to the alveoli when the septa is destroyed?
When the septa is destroyed the alveoli enlargens.
What does enlargining of the alveoli lead to?
Reduces the surface area for gas exchange.
