heart and lung Flashcards
1
Q
How does an asthma attack cause reduced air inhaled
A
decrease in diameter of airway
muscle walls of bronchi contract and secrete more mucus
flow of air is reduced
2
Q
why does emphysema make walking upstairs difficult
A
less aerobic respiration
less co2 removed
less oxygen uptake
3
Q
describe the pathway taken by an oxygen molecule from an alveolus to the blood
A
across the aveolar epithilium
capillary
4
Q
suggest and explain how a reduced tidal volume affects the exchange of carbon dioxide between the blood and the alveoli
A
less co2 exhaled so the gradient will be reduced more co2 stays in the blood
