Question 1

A high percentage of body fat results in an increased ability to lose body heat during exercise.

Accepted Answer

A) True 
 B)False  False

Question 2

Which of the following could be a mechanism of heat gain in a hot and sunny environment?

Accepted Answer

A) radiation 
B) conduction 
C) evaporation 
D) radio waves 
A) radiation 
B) conduction 
C) evaporation 
D) radio waves A

Question 3

Training in a cool environment while wearing warm clothing (e.g. ,sweats)promotes heat acclimatization.
37.Dehydration that results in a loss of 1-2% of body weight is sufficient to impair exercise performance.

Accepted Answer

A) True 
 B)False  True

Question 4

The transfer of heat from the body into molecules of cooler objects in contact with its surface is called

Accepted Answer

A) radiation. 
B) conduction. 
C) convection. 
D) evaporation. 
A) radiation. 
B) conduction. 
C) convection. 
D) evaporation.

Question 5

During exercise ____________ of energy produced is released as heat.

Accepted Answer

A) <10% 
B) 20-30% 
C) 50% 
D) 70-80% 
A) <10% 
B) 20-30% 
C) 50% 
D) 70-80%

Question 6

Heat production can be increased through

Accepted Answer

A) shivering. 
B) non-shivering thermogenesis. 
C) the action of thyroxine and catecholamines. 
D) All of the above answers are correct. 
A) shivering. 
B) non-shivering thermogenesis. 
C) the action of thyroxine and catecholamines. 
D) All of the above answers are correct.

Question 7

The evaporation of 1,000 ml of sweat results in the loss of 1,000 kcal of heat.

Accepted Answer

A) True 
 B)False

Question 8

Regulation of body core temperature is important because

Accepted Answer

A) cellular structures and metabolic pathways are affected by temperature. 
B) low temperatures can promote abnormal cardiac function (e.g. ,arrhythmias). 
C) high temperature can alter the structure and function of enzymes. 
D) All of the above statements are correct. 
A) cellular structures and metabolic pathways are affected by temperature. 
B) low temperatures can promote abnormal cardiac function (e.g. ,arrhythmias). 
C) high temperature can alter the structure and function of enzymes. 
D) All of the above statements are correct.

Question 9

Cold acclimation results in which of the following physiological adaptations?

Accepted Answer

A) increased nonshivering thermogenesis. 
B) improved ability to prevent large decreases in skin temperature during cold exposure. 
C) improved ability to sleep in cold environments. 
D) All of the above answers are correct. 
A) increased nonshivering thermogenesis. 
B) improved ability to prevent large decreases in skin temperature during cold exposure. 
C) improved ability to sleep in cold environments. 
D) All of the above answers are correct.

Question 10

An increase in body core temperature results in

Accepted Answer

A) cutaneous vasoconstriction. 
B) cutaneous vasodilation. 
C) thyroxine release. 
D) shivering. 
A) cutaneous vasoconstriction. 
B) cutaneous vasodilation. 
C) thyroxine release. 
D) shivering.

Question 11

Hypothermia is defined as a significant

Accepted Answer

A) decrease in skin temperature. 
B) decrease in body core temperature. 
C) increase in body core temperature. 
D) decrease in skin blood flow. 
A) decrease in skin temperature. 
B) decrease in body core temperature. 
C) increase in body core temperature. 
D) decrease in skin blood flow.

Question 12

Evaporation of one liter of sweat would result in the loss of ________ kcal of heat.

Accepted Answer

A) 100 
B) 500 
C) 540 
D) 580 
A) 100 
B) 500 
C) 540 
D) 580

Question 13

The principal means of heat loss at rest in a cool indoor environment (20$\degree$C/low humidity)is via

Accepted Answer

A) radiation. 
B) conduction. 
C) evaporation. 
D) convection. 
A) radiation. 
B) conduction. 
C) evaporation. 
D) convection.

Question 14

The primary source of heat production during exercise is

Accepted Answer

A) the heart. 
B) the gastrointestinal tract. 
C) through the action of thyroxine and catecholamines. 
D) the contracting skeletal muscles. 
A) the heart. 
B) the gastrointestinal tract. 
C) through the action of thyroxine and catecholamines. 
D) the contracting skeletal muscles.

Question 15

In general,during exercise in a thermoneutral environment,the increase in core temperature is directly related to the exercise intensity.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements about body temperature homeostasis is correct?

Accepted Answer

A) Body temperature is a balance between heat loss and heat gain. 
B) Core temperature is constantly maintained at 34$\degree$C. 
C) Skin temperature is usually equal to core temperature. 
D) None of the above statements are correct. 
A) Body temperature is a balance between heat loss and heat gain. 
B) Core temperature is constantly maintained at 34$\degree$C. 
C) Skin temperature is usually equal to core temperature. 
D) None of the above statements are correct.

Question 17

Which of the following conditions would result in the highest vapor pressure in the air?

Accepted Answer

A) 20oC,100% relative humidity 
B) 30oC,75% relative humidity 
C) 30oC,50% relative humidity 
D) 25oC,75% relative humidity 
A) 20oC,100% relative humidity 
B) 30oC,75% relative humidity 
C) 30oC,50% relative humidity 
D) 25oC,75% relative humidity

Question 18

Pre-cooling the body before performing prolonged exercise in a hot and humid environment has been shown to significantly improve performance.

Accepted Answer

A) True 
 B)False

Question 19

Exercise in the heat is associated with accelerated fatigue due,in part,to

Accepted Answer

A) decreased muscle glycogen utilization. 
B) increased free radical production in the active skeletal muscles. 
C) decreased lactate production. 
D) all of the above answers are correct. 
A) decreased muscle glycogen utilization. 
B) increased free radical production in the active skeletal muscles. 
C) decreased lactate production. 
D) all of the above answers are correct.

Question 20

Which of the following statements are true about heat shock proteins?

Accepted Answer

A) Repeated bouts of exercise in warm or hot environments increase their synthesis in cells. 
B) They stabilize and refold damaged cellular proteins. 
C) They assist cells in tolerating heat stress. 
D) All of the above answers are correct. 
A) Repeated bouts of exercise in warm or hot environments increase their synthesis in cells. 
B) They stabilize and refold damaged cellular proteins. 
C) They assist cells in tolerating heat stress. 
D) All of the above answers are correct.

Exam 13: Temperature Regulation

A high percentage of body fat results in an increased ability to lose body heat during exercise.

Which of the following could be a mechanism of heat gain in a hot and sunny environment?

Training in a cool environment while wearing warm clothing (e.g. ,sweats)promotes heat acclimatization. 37.Dehydration that results in a loss of 1-2% of body weight is sufficient to impair exercise performance.

The transfer of heat from the body into molecules of cooler objects in contact with its surface is called

During exercise ____________ of energy produced is released as heat.

Heat production can be increased through

The evaporation of 1,000 ml of sweat results in the loss of 1,000 kcal of heat.

Regulation of body core temperature is important because

Cold acclimation results in which of the following physiological adaptations?

An increase in body core temperature results in

Hypothermia is defined as a significant

Evaporation of one liter of sweat would result in the loss of ________ kcal of heat.

The principal means of heat loss at rest in a cool indoor environment (20 °\degree° C/low humidity)is via

The primary source of heat production during exercise is

In general,during exercise in a thermoneutral environment,the increase in core temperature is directly related to the exercise intensity.

Which of the following statements about body temperature homeostasis is correct?

Which of the following conditions would result in the highest vapor pressure in the air?

Pre-cooling the body before performing prolonged exercise in a hot and humid environment has been shown to significantly improve performance.

Exercise in the heat is associated with accelerated fatigue due,in part,to

Which of the following statements are true about heat shock proteins?

Introduction to Exercise Physiology

A: Common Measurements in Exercise Physiology

B: Common Measurements in Exercise Physiology

Control of the Internal Environment

Bioenergetics

Exercise Metabolism

Cell Signaling and Hormonal Response to Exercise

Exercise and the Immune System

The Nervous System: Structure and Control of Movement

Skeletal Muscle: Structure and Function

Circulatory Responses to Exercise

Respiration During Exercise

Acid-Base Balance

Physiology of Training: Effect on Vo2 Max, Performance, and Strength

Preventing Chronic Disease: Physical Activity and Healthy Eating

Work Tests to Evaluate Cardiorespiratory Fitness

Exercise Prescriptions for Health and Fitness

Exercise Prescriptions for Health and Fitness

Nutrition and Body Composition for Health

Factors Affecting Performance

Laboratory Assessment of Human Performance

Training for Performance

Training for the Female Athlete, Children, Special Populations, and the Masters Athlete

Nutrition, Body Composition, and Performance

Exercise and the Environment

Ergogenic Aids

Filters

The principal means of heat loss at rest in a cool indoor environment (20 $\degree$ C/low humidity)is via