Happy, happy birthday, dear Michelle!

I hope your Lemon Cake with Cream Cheese (or was it Strawberry?) frosting was delectable!


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Day Seven
The 10 Objectives for today:


1. Define the surface area of the respiratory membrane made of alveoli in the lungs.
2. Name the place at which gas exchange takes place in the body.
3. Explain how inhalation and exhalation take place.
4. State the percentage of oxygen and nitrogen contained in the air.
5. Explain why gas prescence in the blood controls breathing rate.
6. Describe controlled hyperventilation as it relates to free diving.
7. State how to deal with an anxious feeling during a dive.
8. State the steps in properly performed CPR.
9. Describe in your own terms what "clean air" means.
10. State what type of lubricant is used on scuba gear.


In the water today we will practice controlled hyperventilation (no more than 3 times!) before beginning a breath-hold dive.

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