| Sea
Level |
|
|
|
|
| • | breathing -
air |
||
| drawn into
lungs |
|||
|
|
|
| • | 21% oxygen |
|
| AIR |
|
|
|
|
| • | blood enters
lungs |
||
| 75% full of
oxygen |
|||
| O2 |
| LUNGS |
|
|
|
|
|
|
| • | blood leaves
lungs |
||||
| 98% full to
supply |
|||||
| body, brain
(12-14 |
|||||
| seconds later) |
|||||
| 98% |
| 75% |
| BLOOD |