The gas exchange
TABLE OF CONTENT
O The gas exchange surface
O Trachea
O Bronchi
O Alveoli
O Gas exchange in lungs
The gas exchange surface
In aerobic respiration it needs 2 things
glucose and oxygen. Plants and animals
get their oxygen from their
surroundings. And there is a waste
product which is CO2 and needs to be
removed from body. This action is called
gas exchange.
Characteristics
To do this we have developed characteristics,
these are.
O They are thin. It helps the gas to diffuse through
them quickly.
O They are near a transport system, thus they can
take gases from or deliver it quick.
O They have a large surface area, to increase the
amount of gas that can diffuse.
O They have good supply of oxygen.
O Its permeable
Human breathing system
O The most important