Question 1

Individuals with McArdle's disease cannot break down glycogen.How would this affect substrate utilization during exercise?

Accepted Answer

These individuals cannot rely on glycogen stores during exercise.Therefore,carbohydrates are available to them through only two pathways: gluconeogenesis and exogenous glucose.As a result,they must rely mostly on fat oxidation for energy.

Question 2

The nutrients that yield the most energy per gram when metabolized are

Accepted Answer

A)  carbohydrates. 
B)  proteins. 
C)  fats. 
D)  nucleic acids. 
E)  vitamins. 
A)  carbohydrates. 
B)  proteins. 
C)  fats. 
D)  nucleic acids. 
E)  vitamins. C

Question 3

Match the response to the description.
-peripheral vascular resistance during exercise

Accepted Answer

A) increase 
B) decrease 
C) no change 
A) increase 
B) decrease 
C) no change B

Question 4

It takes approximately ________ of aerobic exercise to begin mobilizing fats from adipose tissue.

Accepted Answer

A)  30 seconds 
B)  10 minutes 
C)  30 minutes 
D)  45 minutes 
E)  60 minutes 
A)  30 seconds 
B)  10 minutes 
C)  30 minutes 
D)  45 minutes 
E)  60 minutes

Question 5

There is clear evidence that strenuous exercise on a regular basis enhances the immune system.

Accepted Answer

A) True 
 B)False

Question 6

During exercise,blood flow to the active skeletal muscles is increased by autoregulation.Propose a mechanism based on the need for nutrients that would explain how the autoregulation might take place.

Accepted Answer

When a skeletal muscle becomes more acti

Question 7

Sweat glands contain

Accepted Answer

A)  cholinergic receptors. 
B)  alpha-1 receptors. 
C)  alpha-2 receptors. 
D)  beta receptors. 
E)  All of the answers are correct. 
A)  cholinergic receptors. 
B)  alpha-1 receptors. 
C)  alpha-2 receptors. 
D)  beta receptors. 
E)  All of the answers are correct.

Question 8

The role of phosphocreatine is to

Accepted Answer

A)  store energy. 
B)  store oxygen. 
C)  release energy. 
D)  transfer energy. 
E)  provide a substrate for gluconeogenesis. 
A)  store energy. 
B)  store oxygen. 
C)  release energy. 
D)  transfer energy. 
E)  provide a substrate for gluconeogenesis.

Question 9

If oxygen is NOT available for aerobic ATP production,________ builds up on muscles.

Accepted Answer

A)  glucose 
B)  ATP 
C)  pyruvic acid 
D)  lactic acid 
A)  glucose 
B)  ATP 
C)  pyruvic acid 
D)  lactic acid

Question 10

Match the response to the description.
-mean arterial pressure during exercise

Accepted Answer

A) increase 
B) decrease 
C) no change 
A) increase 
B) decrease 
C) no change

Question 11

When the concentration of sodium ion in the ECF increases,

Accepted Answer

A)  osmoreceptors are stimulated. 
B)  there is a decreased thirst. 
C)  ADH secretion decreases. 
D)  aldosterone secretion increases. 
E)  there is an increase in the volume of urine produced. 
A)  osmoreceptors are stimulated. 
B)  there is a decreased thirst. 
C)  ADH secretion decreases. 
D)  aldosterone secretion increases. 
E)  there is an increase in the volume of urine produced.

Question 12

The initial change in heart rate at the onset of exercise is due to

Accepted Answer

A)  sympathetic stimulation. 
B)  the withdrawal of parasympathetic inhibition. 
C)  stretching of the cardiac muscle fibers in response to increased venous return. 
D)  overfilling of the ventricles. 
A)  sympathetic stimulation. 
B)  the withdrawal of parasympathetic inhibition. 
C)  stretching of the cardiac muscle fibers in response to increased venous return. 
D)  overfilling of the ventricles.

Question 13

James made a New Years resolution to get healthy so started an exercise plan.Early in the process he noticed that he fatigued quickly.As he continued to exercise regularly,he noticed that it took longer to fatigue.What change explains the increased endurance?

Accepted Answer

As James continued to exercise,his body

Question 14

Why is the normal baroreceptor reflex absent during exercise?

Accepted Answer

There are several theories.See

Question 15

Susie has hyperthyroidism.How might this affect ATP production during exercise?

Accepted Answer

Normally,only 20-25% of energy released

Question 16

The adaption of the body to repeated exercise in hot environments occurs through a process called ________.

Accepted Answer

The answer of The adaption of the body to repeated...

Question 17

In resistance exercise,such as strength training,muscles rely heavily on ________ energy production.

Accepted Answer

A)  anaerobic 
B)  aerobic 
A)  anaerobic 
B)  aerobic

Question 18

Match the response to the description.
-arterial PO2 during exercise compared to rest

Accepted Answer

A) increase 
B) decrease 
C) no change 
A) increase 
B) decrease 
C) no change

Question 19

With acclimatization,the body begins to do a better job of conserving

Accepted Answer

A)  water only. 
B)  heat only. 
C)  salt only. 
D)  water and heat only. 
E)  water, heat, and salt. 
A)  water only. 
B)  heat only. 
C)  salt only. 
D)  water and heat only. 
E)  water, heat, and salt.

Question 20

With heat acclimatization,

Accepted Answer

A)  sweating becomes more productive. 
B)  aldosterone increases. 
C)  sweating becomes more concentrated. 
D)  sweating becomes more productive and aldosterone increases. 
E)  aldosterone increases and sweating becomes more concentrated. 
A)  sweating becomes more productive. 
B)  aldosterone increases. 
C)  sweating becomes more concentrated. 
D)  sweating becomes more productive and aldosterone increases. 
E)  aldosterone increases and sweating becomes more concentrated.

Exam 25: Integrative Physiology III: Exercise

Individuals with McArdle's disease cannot break down glycogen.How would this affect substrate utilization during exercise?

The nutrients that yield the most energy per gram when metabolized are

Match the response to the description. -peripheral vascular resistance during exercise

It takes approximately ________ of aerobic exercise to begin mobilizing fats from adipose tissue.

There is clear evidence that strenuous exercise on a regular basis enhances the immune system.

During exercise,blood flow to the active skeletal muscles is increased by autoregulation.Propose a mechanism based on the need for nutrients that would explain how the autoregulation might take place.

Sweat glands contain

The role of phosphocreatine is to

If oxygen is NOT available for aerobic ATP production,________ builds up on muscles.

Match the response to the description. -mean arterial pressure during exercise

When the concentration of sodium ion in the ECF increases,

The initial change in heart rate at the onset of exercise is due to

James made a New Years resolution to get healthy so started an exercise plan.Early in the process he noticed that he fatigued quickly.As he continued to exercise regularly,he noticed that it took longer to fatigue.What change explains the increased endurance?

Why is the normal baroreceptor reflex absent during exercise?

Susie has hyperthyroidism.How might this affect ATP production during exercise?

The adaption of the body to repeated exercise in hot environments occurs through a process called ________.

In resistance exercise,such as strength training,muscles rely heavily on ________ energy production.

Match the response to the description. -arterial PO2 during exercise compared to rest

With acclimatization,the body begins to do a better job of conserving

With heat acclimatization,

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Reproduction and Development

Filters

Match the response to the description. -arterial P_O₂ during exercise compared to rest