Gas Exhange Flashcards
1
Q
Where does gas exchange occur in the human body
A
Alveoli
2
Q
How are the Alveoli specialised for gas exchange
A
1)The huge number of them give a large SA
2)The alveoli have thin walls
3)They have great blood supply to maintain a high concentration gradient
4)the walls are permeable
3
Q
what is the Alveoli made up of
A
one layer of thin cells
4
Q
How does having a short diffusion pathway benefit the cell
A
incrteses the rate at which Carbon dioxide and oxygen can diffuse across large SA
5
Q
what texture are the Alveoli walls
A
moist whcih allows the gases to dissolve which increases raet of diffusiuon
6
Q
how do you calculate the breathing rate
A
number of breathes taken/number of minutes
