Question 1

Which of the following hormones is secreted by the thyroid gland and plays a role in the regulation of plasma calcium levels?

Accepted Answer

A)  thyroxine 
B)  triiodothyronine 
C)  calcitonin 
D)  parathyroid hormone 
A)  thyroxine 
B)  triiodothyronine 
C)  calcitonin 
D)  parathyroid hormone C

Question 2

Chronic exposure to high levels of a hormone results in "up regulation" of receptors.

Accepted Answer

A) True 
 B)False  False

Question 3

Steroid hormones exert their effect by

Accepted Answer

A)  activating adenylate cyclase. 
B)  altering the activity of DNA. 
C)  blocking the effect of cyclic AMP. 
D)  causing an inflammation response. 
A)  activating adenylate cyclase. 
B)  altering the activity of DNA. 
C)  blocking the effect of cyclic AMP. 
D)  causing an inflammation response. B

Question 4

Blood epinephrine levels increase as exercise intensity increases, but decrease as exercise duration increases.

Accepted Answer

A) True 
 B)False

Question 5

Insulin secretion would be highest

Accepted Answer

A)  during prolonged exercise. 
B)  as exercise intensity increases. 
C)  after a meal. 
D)  It would be equally high after all of the above. 
A)  during prolonged exercise. 
B)  as exercise intensity increases. 
C)  after a meal. 
D)  It would be equally high after all of the above.

Question 6

When a drug is given to block the adrenergic receptors during exercise, muscle glycogen utilization is reduced.

Accepted Answer

A) True 
 B)False

Question 7

Growth hormone

Accepted Answer

A)  is released from the posterior pituitary. 
B)  spares plasma glucose during exercise. 
C)  is only elevated in children and adolescents. 
D)  All of the above are true. 
A)  is released from the posterior pituitary. 
B)  spares plasma glucose during exercise. 
C)  is only elevated in children and adolescents. 
D)  All of the above are true.

Question 8

Given the importance of maintaining the plasma glucose concentration during exercise, insulin secretion would be expected to ______________ during exercise.

Accepted Answer

A)  increase 
B)  decrease 
C)  remain the same 
A)  increase 
B)  decrease 
C)  remain the same

Question 9

Which of the following may be related to changes in mood and pain perception during endurance exercise?

Accepted Answer

A)  catecholamines 
B)  glucocorticoids 
C)  somatomedins 
D)  endorphins 
A)  catecholamines 
B)  glucocorticoids 
C)  somatomedins 
D)  endorphins

Question 10

During exercise of about 40% VO2 max, the concentration of plasma cortisol

Accepted Answer

A)  is lower than at rest. 
B)  is higher than at rest. 
C)  remains the same as at rest. 
A)  is lower than at rest. 
B)  is higher than at rest. 
C)  remains the same as at rest.

Question 11

The concentration of a hormone can be increased by

Accepted Answer

A)  decreasing the rate at which it is metabolized. 
B)  increasing the number of receptors. 
C)  increasing the rate at which it is excreted. 
D)  increasing the plasma volume. 
A)  decreasing the rate at which it is metabolized. 
B)  increasing the number of receptors. 
C)  increasing the rate at which it is excreted. 
D)  increasing the plasma volume.

Question 12

Which of the following hormones is believed to exert a "permissive" effect on the mobilization of glucose from liver and FFA from adipose tissue?

Accepted Answer

A)  epinephrine 
B)  T3 and T4 
C)  insulin 
D)  glucagon 
A)  epinephrine 
B)  T3 and T4 
C)  insulin 
D)  glucagon

Question 13

The primary effect of the elevated plasma concentration of growth hormone during intense exercise is to

Accepted Answer

A)  increase the synthesis of contractile protein in muscle. 
B)  promote long bone growth. 
C)  favor the mobilization of FFA and reduces tissue use of blood glucose. 
D)  none of the above. 
A)  increase the synthesis of contractile protein in muscle. 
B)  promote long bone growth. 
C)  favor the mobilization of FFA and reduces tissue use of blood glucose. 
D)  none of the above.

Question 14

A hormone that is released from the pancreas at a higher rate during exercise to mobilize liver glucose and adipose tissue fatty acids is

Accepted Answer

A)  glucagon. 
B)  somatostatin. 
C)  insulin. 
D)  none of the above. 
A)  glucagon. 
B)  somatostatin. 
C)  insulin. 
D)  none of the above.

Question 15

Growth hormone secretion increases during exercise and decreases during sleep.

Accepted Answer

A) True 
 B)False

Question 16

Glucagon secretion increases during exercise, which decreases liver glycogen stores in order to maintain blood glucose concentration.

Accepted Answer

A) True 
 B)False

Question 17

As a result of training, the sympathetic nervous system's response to a fixed submaximal work rate

Accepted Answer

A)  is increased. 
B)  is decreased. 
C)  remains the same. 
A)  is increased. 
B)  is decreased. 
C)  remains the same.

Question 18

During exercise, blood glucose concentration is maintained by all of the following except

Accepted Answer

A)  elevated mobilization of FFA from adipose tissue. 
B)  increased rate of gluconeogenesis. 
C)  blocking entry of glucose into cells. 
D)  elevated concentration of insulin. 
A)  elevated mobilization of FFA from adipose tissue. 
B)  increased rate of gluconeogenesis. 
C)  blocking entry of glucose into cells. 
D)  elevated concentration of insulin.

Question 19

When adenylate cyclase is activated by a hormone, the concentration of cyclic AMP increases in the cell even though the hormone does not enter the cell. This is an example of the __________________ mechanism of hormone action.

Accepted Answer

A)  altering membrane transport 
B)  altering activity of DNA 
C)  second messenger 
D)  all of above 
A)  altering membrane transport 
B)  altering activity of DNA 
C)  second messenger 
D)  all of above

Question 20

The term describing the cessation of the menstrual cycle resulting from lower estrogen levels in some female athletes is

Accepted Answer

A)  dysmenorrhea. 
B)  eumenorrhea. 
C)  amenorrhea. 
D)  menarche. 
A)  dysmenorrhea. 
B)  eumenorrhea. 
C)  amenorrhea. 
D)  menarche.

Exam 6: Cell Signaling and the Hormonal Responses to Exercise

Which of the following hormones is secreted by the thyroid gland and plays a role in the regulation of plasma calcium levels?

Chronic exposure to high levels of a hormone results in "up regulation" of receptors.

Steroid hormones exert their effect by

Blood epinephrine levels increase as exercise intensity increases, but decrease as exercise duration increases.

Insulin secretion would be highest

When a drug is given to block the adrenergic receptors during exercise, muscle glycogen utilization is reduced.

Growth hormone

Given the importance of maintaining the plasma glucose concentration during exercise, insulin secretion would be expected to ______________ during exercise.

Which of the following may be related to changes in mood and pain perception during endurance exercise?

During exercise of about 40% VO2 max, the concentration of plasma cortisol

The concentration of a hormone can be increased by

Which of the following hormones is believed to exert a "permissive" effect on the mobilization of glucose from liver and FFA from adipose tissue?

The primary effect of the elevated plasma concentration of growth hormone during intense exercise is to

A hormone that is released from the pancreas at a higher rate during exercise to mobilize liver glucose and adipose tissue fatty acids is

Growth hormone secretion increases during exercise and decreases during sleep.

Glucagon secretion increases during exercise, which decreases liver glycogen stores in order to maintain blood glucose concentration.

As a result of training, the sympathetic nervous system's response to a fixed submaximal work rate

During exercise, blood glucose concentration is maintained by all of the following except

When adenylate cyclase is activated by a hormone, the concentration of cyclic AMP increases in the cell even though the hormone does not enter the cell. This is an example of the __________________ mechanism of hormone action.

The term describing the cessation of the menstrual cycle resulting from lower estrogen levels in some female athletes is

Introduction to Exercise Physiology

Common Measurements in Exercise Physiology

Control of the Internal Environment

Bioenergetics

Exercise Metabolism

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 During Exercise

Temperature Regulation

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

Risk Factors and Inflammation: Links to Chronic Disease

Exercise Prescriptions for Health and Fitness

Exercise for Special Populations

Body Composition and Nutrition 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

During exercise of about 40% VO₂ max, the concentration of plasma cortisol