Question 1

A local increase in the nitric oxide concentration around arterioles would result in

Accepted Answer

A) vasoconstriction. 
B) no change in vessel diameter. 
C) vasodilation. 
D) none of the above answers are correct 
A) vasoconstriction. 
B) no change in vessel diameter. 
C) vasodilation. 
D) none of the above answers are correct

Question 2

The __________ represents ventricular repolarization during a recording of the electrical activity (i.e. ,ECG)of the heart.

Accepted Answer

A) P wave 
B) QRS complex 
C) T wave 
D) R wave 
A) P wave 
B) QRS complex 
C) T wave 
D) R wave

Question 3

Which of the following factors has the greatest influence on blood flow to a skeletal muscle during exercise?

Accepted Answer

A) arterial pressure 
B) diameter of the arterial blood vessels leading to the muscle 
C) number of capillaries surrounding the muscle 
D) the viscosity of the blood 
A) arterial pressure 
B) diameter of the arterial blood vessels leading to the muscle 
C) number of capillaries surrounding the muscle 
D) the viscosity of the blood

Question 4

The muscle of the heart is referred to as the

Accepted Answer

A) pericardium. 
B) myocardium. 
C) epicardium. 
D) endocardium. 
A) pericardium. 
B) myocardium. 
C) epicardium. 
D) endocardium.

Question 5

At any end-diastolic volume,stroke volume is increased by parasympathetic stimulation.

Accepted Answer

A) True 
 B)False

Question 6

Autoregulation of blood flow to contracting muscles during exercise is due to

Accepted Answer

A) the withdrawal of sympathetic impulses to arteries. 
B) an increase in parasympathetic outflow to arterioles. 
C) locally produced factors such as nitric oxide,prostaglandins,and adenosine. 
D) an increase in sympathetic impulses to arterioles. 
A) the withdrawal of sympathetic impulses to arteries. 
B) an increase in parasympathetic outflow to arterioles. 
C) locally produced factors such as nitric oxide,prostaglandins,and adenosine. 
D) an increase in sympathetic impulses to arterioles.

Question 7

The arterial-venous oxygen difference

Accepted Answer

A) increases as a function of exercise intensity. 
B) does not change during exercise. 
C) decreases as the exercise intensity increases. 
D) is highest during submaximal exercise. 
A) increases as a function of exercise intensity. 
B) does not change during exercise. 
C) decreases as the exercise intensity increases. 
D) is highest during submaximal exercise.

Question 8

The metabolic demand of the heart can be estimated by

Accepted Answer

A) the rate-pressure product. 
B) the double product. 
C) multiplying heart rate by systolic blood pressure. 
D) all of the above. 
A) the rate-pressure product. 
B) the double product. 
C) multiplying heart rate by systolic blood pressure. 
D) all of the above.

Question 9

The greatest resistance to blood flow is in the

Accepted Answer

A) veins. 
B) arterioles. 
C) aorta. 
D) capillaries. 
A) veins. 
B) arterioles. 
C) aorta. 
D) capillaries.

Question 10

All gas exchange between the vascular system and tissues occurs in

Accepted Answer

A) venules. 
B) capillaries. 
C) arterioles. 
D) veins. 
A) venules. 
B) capillaries. 
C) arterioles. 
D) veins.

Question 11

During exercise,the time spent in diastole and systole

Accepted Answer

A) remains unchanged. 
B) is decreased equally. 
C) is decreased,with the greatest decrease occurring in diastole. 
D) is increased. 
A) remains unchanged. 
B) is decreased equally. 
C) is decreased,with the greatest decrease occurring in diastole. 
D) is increased.

Question 12

Which of the following statement about beta-adrenergic blocking medications are true?

Accepted Answer

A) beta blocking drugs reduce heart rate during exercise. 
B) beta blockade reduces the vigor of ventricular contraction. 
C) beta blocking drugs compete with epinephrine and norepinephrine for beta-adrenergic receptors in the heart. 
D) all of the above answers are correct. 
A) beta blocking drugs reduce heart rate during exercise. 
B) beta blockade reduces the vigor of ventricular contraction. 
C) beta blocking drugs compete with epinephrine and norepinephrine for beta-adrenergic receptors in the heart. 
D) all of the above answers are correct.

Question 13

Skeletal and cardiac muscle are similar in which of the following ways?

Accepted Answer

A) both muscles contain type I,IIa,and IIx fibers 
B) both muscles are under voluntary control 
C) both muscles contain fibers that are branched 
D) both muscles are composed of striated fibers containing actin and myosin 
A) both muscles contain type I,IIa,and IIx fibers 
B) both muscles are under voluntary control 
C) both muscles contain fibers that are branched 
D) both muscles are composed of striated fibers containing actin and myosin

Question 14

In general,heart rate increases in direct proportion to the metabolic rate during exercise.

Accepted Answer

A) True 
 B)False

Question 15

Exercise training helps the heart resist damage during a heart attack.

Accepted Answer

A) True 
 B)False

Question 16

Most of the increase in mean arterial blood pressure that occurs during dynamic (isotonic)incremental exercise is due to

Accepted Answer

A) an increase in diastolic blood pressure. 
B) the increase in systolic blood pressure. 
C) both an increase in diastolic and systolic blood pressure. 
D) none of the above answers are correct 
A) an increase in diastolic blood pressure. 
B) the increase in systolic blood pressure. 
C) both an increase in diastolic and systolic blood pressure. 
D) none of the above answers are correct

Question 17

The contraction phase of the heart is called

Accepted Answer

A) diastole. 
B) atrial contraction. 
C) systole. 
D) the cardiac cycle. 
A) diastole. 
B) atrial contraction. 
C) systole. 
D) the cardiac cycle.

Question 18

The increase in cardiac output that occurs during exercise is due to

Accepted Answer

A) both an increase in mean arterial pressure and a decrease in vascular resistance. 
B) a decrease in vascular resistance only. 
C) an increase in mean arterial blood pressure only. 
D) an increase in heart rate and a decrease in mean arterial blood pressure. 
A) both an increase in mean arterial pressure and a decrease in vascular resistance. 
B) a decrease in vascular resistance only. 
C) an increase in mean arterial blood pressure only. 
D) an increase in heart rate and a decrease in mean arterial blood pressure.

Question 19

The decrease in maximal heart rate with age in adults can be estimated via

Accepted Answer

A) HR max = 220 - age. 
B) HR max = 200 - age. 
C) HR max = 210 - age. 
D) HR max = 205 - age. 
A) HR max = 220 - age. 
B) HR max = 200 - age. 
C) HR max = 210 - age. 
D) HR max = 205 - age.

Question 20

Sympatholysis refers to

Accepted Answer

A) local inhibition of the parasympathetic nervous system. 
B) local inhibition of sympathetic-induced vasoconstriction. 
C) increased sympathetic nervous system activity during exercise. 
D) none of the above answers are correct 
A) local inhibition of the parasympathetic nervous system. 
B) local inhibition of sympathetic-induced vasoconstriction. 
C) increased sympathetic nervous system activity during exercise. 
D) none of the above answers are correct

Exam 10: Circulatory Responses to Exercise

A local increase in the nitric oxide concentration around arterioles would result in

The __________ represents ventricular repolarization during a recording of the electrical activity (i.e. ,ECG)of the heart.

Which of the following factors has the greatest influence on blood flow to a skeletal muscle during exercise?

The muscle of the heart is referred to as the

At any end-diastolic volume,stroke volume is increased by parasympathetic stimulation.

Autoregulation of blood flow to contracting muscles during exercise is due to

The arterial-venous oxygen difference

The metabolic demand of the heart can be estimated by

The greatest resistance to blood flow is in the

All gas exchange between the vascular system and tissues occurs in

During exercise,the time spent in diastole and systole

Which of the following statement about beta-adrenergic blocking medications are true?

Skeletal and cardiac muscle are similar in which of the following ways?

In general,heart rate increases in direct proportion to the metabolic rate during exercise.

Exercise training helps the heart resist damage during a heart attack.

Most of the increase in mean arterial blood pressure that occurs during dynamic (isotonic)incremental exercise is due to

The contraction phase of the heart is called

The increase in cardiac output that occurs during exercise is due to

The decrease in maximal heart rate with age in adults can be estimated via

Sympatholysis refers to

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

Respiration During Exercise

Acid-Base Balance

Temperature Regulation

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

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