- =

o» Be

22 What are the five fundamentals for the prevention of occupational
diseases ani poisons? {Rosenau)

3. Outline a plan for the prevention of lead poisoning in a pottery
using lead.

4. Explain the preventive action of milk drinking in lead workers.
5. Discuss alcohol as a food.
6. Is alcohol a true stimulant? Why not?

7, Explain the function of Pure Food and Drug and the Harrison law
in controiling drug addiction.

8. What are the important active principles contained in the tobacco
plant? Explain the way in which pyridin is said to produce its
ill ervecss on the body.

9. Wheat is the relation of the use of tobacco to habit formation?
Efficiency?

10. Explain physiologically why the athletic cach prohibits smoking
for men in training.

XIII. PHYSICAL AGENTS AS CAUSES OF ILL HEALTH

Certain physical agents are capable either directly or indirectly of
causing ill health. A few of the more important will be discussed. Atten~
tion will be called to the heaith influences of certain other ones.

Atmospheric Pressure

 

While changes in atmospheric pressure are not usually of much impor~
tance to the average individual, a knowledge of them is essential under
special conditions of work, recreation, or transportation.

Diminished

Due to the rapid growth of aviation, diminished air pressure is be-
caning more and more important,

Occurrence

{a} Mountain Climbing

(b) Aeroplaning and ballooning

Effects

The effects of living at very high altitudes with their low pressure can

only be mentioned.

The acute effects express themselves in headache, lassitude, and some=
times nausea. The extremities are cold, the pulse is weakened, and the
respirations are deeper and more frequent. The face becomes pallid ond lips
and nails blue. Readjustment sometimes is made.