Difusion And Gas Exchange (2) Flashcards
1
Q
Define ‘Defuse’
A
The movement of particles from an area of high concentration to an area of lower concentration
2
Q
Give an example of ‘diffuse’
A
Cooking: The high concentration is in the kitchen and the low concentration is upstairs
3
Q
What does the concentration then do?
A
Spread out
4
Q
Give an example of diffusion in our body
A
Lungs: Particles move oxygen from the alveolour air space to blood circulating around the lungs
5
Q
Where does ‘Gas Exchange’ happen?
A
In the aleoli
6
Q
What is there one thin layer of in the alveoil?
A
One thin layer of cells
7
Q
What other part of the body also has ‘one thin layer of cells’?
A
The capillary
8
Q
Why is it called ‘Gas Exchange’? What is happening?
A
We are exchanging oxygen and carbon Dioxide
