, Gaseous Exchange
Breathing :
mechanical process causing movement of airventilation)
Gaseous exchange
:
exchange of gases across a respiratory surface
Cellular respiration :
CoHizOn +
O2 <CO2 + H2O ATP
·
+
Requirements foro n Effective G E.
.
process
1 . Large surface area :
increased absorption of O2 multiple alveoli (infundibulum)
.
2 Thin surface :
easy diffusion -I cell layer
.
3 Moist :
facilitate diffusion tissue fluid
9 .
Proximity of Transport System :
blood + long interchange 'capillaries touching each alredus
.
5 Ventilation mechanism :
brings O2 source into contact with GE surface 'diaphragm ,
trachea 1C muscles
,
.
6 Sufficient protection :
against desiccation (drying out a mechanical injury <ribs cartilage
,
Different G E
. surfaces
1 . Insects :
trachea +
haemocoel
2 .
Fish :
gills
·
.
3 Terrestrial Mammals :
internal ligs
-
Breathing :
mechanical process causing movement of airventilation)
Gaseous exchange
:
exchange of gases across a respiratory surface
Cellular respiration :
CoHizOn +
O2 <CO2 + H2O ATP
·
+
Requirements foro n Effective G E.
.
process
1 . Large surface area :
increased absorption of O2 multiple alveoli (infundibulum)
.
2 Thin surface :
easy diffusion -I cell layer
.
3 Moist :
facilitate diffusion tissue fluid
9 .
Proximity of Transport System :
blood + long interchange 'capillaries touching each alredus
.
5 Ventilation mechanism :
brings O2 source into contact with GE surface 'diaphragm ,
trachea 1C muscles
,
.
6 Sufficient protection :
against desiccation (drying out a mechanical injury <ribs cartilage
,
Different G E
. surfaces
1 . Insects :
trachea +
haemocoel
2 .
Fish :
gills
·
.
3 Terrestrial Mammals :
internal ligs
-
