â¢ The critical path is defined as the longest path through the CPM network and consists of those activities. that determine the shortest time for project completion. Activities within this or list form a series (or. sequence) of logically connected activities that is called the critical path.
Time is very important when an unconscious person is not breathing. Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later. Machines called automated external defibrillators (AEDs) can be found in many public places, and are available for home use.
The brain controls all our bodily functions, but there are three things it cannot do: 1  It cannot feel pain. The brain can feel pain from all over the body, but not within itself. 2  The brain cannot store oxygen. A person can feel a lack of oxygen after only a few seconds. 3  The brain cannot store glucose (blood sugar).