Chapter 11

Question 1

How do you convert Celsius to Fahrenheit

Answer 1

Multiply Celsius by 1.8 than 32

Question 2

Conduction

Answer 2

One solid to another through direct contact

Question 3

convection

Answer 3

Moving heat from one place to another by motion of gas or liquid across a heated surface

Question 4

Radiation

Answer 4

Heat given off in form of infared rays

Question 5

Evaporation

Answer 5

Heat lost when fluid evaporates

Primary heat dissipation during exercise,80% heat lost

Question 6

How do you convert Fahrenheit to Celsius

Answer 6

Subtract 32 from Fahrenheit then divided by 1.8

Question 7

What is the body’s temperature during exercise

Answer 7

40 degree C

104 degree F

Question 8

What is the internal body temperature in active muscles

Answer 8

32 degree C

107.6 degree F

Question 9

What is preoptic- anterior hypothalamus

Answer 9

Monitors temperature & accelerating heat loss/ heat production as needed.

Question 10

What are peripheral & central thermoreceptors

Answer 10

Peripheral thermoreceptors in skin & central thermoreceptors in brain transmit information about the body’s internal temperature

Question 11

What is the cardiovascular function in the heart

Answer 11

Circulatory system continues to transport blood to the working muscle & increase blood flow to the skin for thermoregulation

Question 12

What are the four variables of environmental heat load

Answer 12

Air temperature
Humidity
Air velocity
Amount of thermo radiation

Question 13

Heat cramps (symptoms &treatments)

Answer 13

Symptoms: severe painful cramping of the large muscle groups
Treatments: move to cool area& drink fluids

Question 14

Heat exhaustion (symptoms and treatments)

Answer 14

Symptoms: extreme fatigue, dizziness, nausea, vomiting, fainting and rapid pulse
treatments: move to cool environment & elevate feet above heart

Question 15

Heat stroke (symptoms and treatments)

Answer 15

Symptoms: high internal body temperature cessation of active sweat, rapid pulse and respiration, confusion
Treatments: rapidly cool body in cold water & seek medical attention

Question 16

Preventing hyperthermia

Answer 16

Avoid exercising in humid conditions above 28 Celsius (82.4 Fahrenheit)

Question 17

How long does it take to achieve heat acclamation

Answer 17

For one hour or more each day for 9 to 14 days during exercise in heat

Question 18

Shivering

Answer 18

Involves rapid involuntary cycle of contraction and relaxation of muscles to increase heat production

Question 19

Non-shivering thermogenesis

Answer 19

stimulation of metabolism by the sympathetic nervous system

Question 20

Peripheral vasoconstriction

Answer 20

reduces blood flow to skin

Question 21

What are 4 factors that affect body heat loss

Answer 21

• Body size and composition
• Air temperature
• Windchill
• Water immersion

Question 22

Hypothermia

Answer 22

34.5 Celsius (94.1 Fahrenheit)

causes heart rate to drop from impaired cardiac conduction through SA node

Question 23

Frost bite

Answer 23

At or below 0Celsius (32 Fahrenheit)

Question 24

Two reasons why heat is lost in Cold water

Answer 24

Water has thermal conductivity about 26 times greater than air

heat loss is four times faster in water