Test Ventilation Flashcards
1
Q
What are the thousand of tiny sacs in the lungs called
A
Alveoli
2
Q
The alveoli is covered in what
A
Capillaries which bring blood without oxygen back to the lungs
3
Q
In the alveoli what diffuses into the blood
A
Oxygen
4
Q
In the alveoli what diffuses out
A
Carbon dioxide
5
Q
Why is the oxygen pumped in the blood
A
So it is can get in to the cells where it is used for respiration
6
Q
Why are the alveoli 1 cell thick
A
Makes a shorter diffusion distance
7
Q
Why is oxygenated blood pumped away through circulatory system
A
Matains the concentration gradient for diffusion
8
Q
Why is the lining of the alveoli are moist
A
Diffusion occurs faster in liquid
9
Q
Why is there thousands of alveoli in the lungs
A
Increases the surface area for diffusion
