Pathway of air Flashcards
(6 cards)
1
Q
what is the role of the bronchi?
A
Branches from the trachea, allows air to travel between trachea and lungs
2
Q
what is the role of the alveoli
A
small air sacs at the end of bronchioles, gas is exchanged here
3
Q
what is the role of the bronchioles
A
carries air to the alevoli
4
Q
what are the feautures of the alveoli
A
1) large surface area, only one cell thick.
2) short diffusion distance
3) many capillaries
4) layer of moisture, allowing gases to dissolve
5
Q
what is the equation for oxyhemoglobin
A
oxygen + haemaglobin
6
Q
what process does gas exchange occur
A
diffusion
