respiratory system Flashcards
1
Q
what are lungs?
A
the gas exchange organs
2
Q
oxygen
A
passes into the blood after breathing IN
3
Q
carbon dioxide
A
passes out of the blood when breathing OUT
4
Q
what does gas exchange occur within?
A
within a large number of alveoli
5
Q
the alveolus has a high?
A
oxygen concentration
6
Q
left side of the blood capillary
A
- deoxygenated (CO2)
- high CO2 conc
- low O2 conc
7
Q
oxygen goes
A
into the alveolus and out of right side of blood capillary
8
Q
carbon dioxide goes
A
out of the alveolus from the left side of the blood capillary
9
Q
right side of the blood capillary
A
- oxygenated (O2)
- high O2 conc
- low CO2 conc
10
Q
what are the features increasing efficiency of absorption in the respiratory system? OR the alveoli are very good at gas exchange because?
A
- large numbers of alveoli
- thin wall
- large surface area
- extensive blood supply
