The document discusses heat reactions of the human body including heat exhaustion and heat stroke. Heat exhaustion occurs when the body cannot tolerate vigorous exercise or strenuous work in excessive heat, and is characterized by clammy skin, fatigue, nausea, dizziness, and profuse sweating. Heat stroke occurs when the body's temperature regulation system fails and body temperature rises rapidly, and is characterized by high temperature, rapid pulse, hot dry skin, and blocked sweating mechanism. First aid treatment for heat exhaustion involves lying down, raising feet, applying cool wet cloths, and sips of salt water. For heat stroke, first aid aims to quickly cool down the body by placing the victim in cold water or sponging with
2. VOCABULARY
1. Tolerate (v) suffer sth
2. Be engaged in : th畛c hi畛n
3. Vigorous (a) very active (Take vigorous
exercise for several hours a week.)
4. Occur (v)
5. Excessive (a)
6. Sweat (v)
7. Strenuous (a) needing great effort & exercise
8. Eliminate (v) stop sth
9. Exhaust (v) to make your body tired
4. 7. Fatigue (n) feeling of tiredness
8. Profuse (a) produced in large amounts
9. Adequate # inadequate
10. Block (v) stop sth
11. Sponge (v) wash with wet cloth
12.Chill (v) to make sb cold
First aid
Life-threatening (a)
8. Criteri
a
Heat exhaustion Heat stroke
Charact
eristics
-Clammy skin,
fatigue, nausea,
dizziness
-profuse
perspiration
- fainting
-High temperature,
-rapid pulse, hot, dry
skin
-Blocked sweating
mechanism
First-
aid
treatme
nt
-victim: lie down,
raise feet
-Apply cook, wet
cloth
-Sips of salt water
-Length: 1-hour
period
-Quickly cool the body
-Placed in Tub of cold
water, sponged with
cool water
-Fan, air conditioners
help
9. Criteri
a
Heat exhaustion Heat stroke
Charact
eristics
-Clammy skin,
fatigue, nausea,
dizziness
-profuse
perspiration
- fainting
-High temperature,
-rapid pulse, hot, dry
skin
-Blocked sweating
mechanism
First-
aid
treatme
nt
-victim: lie down,
raise feet
-Apply cook, wet
cloth
-Sips of salt water
-Length: 1-hour
period
-Quickly cool the body
-Placed in Tub of cold
water, sponged with
cool water
-Fan, air conditioners
help
10. READING COMPREHENSION
1. When do heat reactions occur?
2. What are the problems when the body cannot
stop the excess heat?
3. When does heat exhaustion happen?
4. How long is the first-aid treatment in heat
reaction?
5. Is heat reaction more serious than heat stroke?
6. Does the patient sweat in heat stroke?
Why/why not?
7. What is the purpose of first-aid in heat stroke?