Question 1

The cell membrane around a muscle fiber is called the

Accepted Answer

A) soma. 
B) plasma membrane. 
C) mucous membrane. 
D) sarcolemma. 
A) soma. 
B) plasma membrane. 
C) mucous membrane. 
D) sarcolemma.

Question 2

Postactivation potentiation is defined as

Accepted Answer

A) the increase in muscle force production that occurs following consumption of a high carbohydrate meal. 
B) the increase in muscle force production that occurs following a bout of non-fatiguing,submaximal contractions. 
C) the increase in muscle force production that occurs following a bout of fatiguing,maximal contractions. 
D) none of the above answers are correct 
A) the increase in muscle force production that occurs following consumption of a high carbohydrate meal. 
B) the increase in muscle force production that occurs following a bout of non-fatiguing,submaximal contractions. 
C) the increase in muscle force production that occurs following a bout of fatiguing,maximal contractions. 
D) none of the above answers are correct

Question 3

The peak power generated by any skeletal muscle increases with increasing velocities of movement up to a movement speed of 200-300 degrees per second.Which of the following factors can explain this observation?

Accepted Answer

A) ATPase activity decreases as a function of the speed of muscle shortening. 
B) Myosin cross-bridges develop velocity-related fatigue. 
C) muscle ATP levels are depleted at shortening velocities above 300 degrees per second. 
D) None of the above answers are correct 
A) ATPase activity decreases as a function of the speed of muscle shortening. 
B) Myosin cross-bridges develop velocity-related fatigue. 
C) muscle ATP levels are depleted at shortening velocities above 300 degrees per second. 
D) None of the above answers are correct

Question 4

The amount of force exerted during muscular contraction is dependent on the

Accepted Answer

A) type of motor units recruited ONLY. 
B) type of motor units recruited,the initial length of the muscle,and the nature of the neural stimulation. 
C) length of the muscle fibers ONLY. 
D) nature of the neural stimulation ONLY. 
A) type of motor units recruited ONLY. 
B) type of motor units recruited,the initial length of the muscle,and the nature of the neural stimulation. 
C) length of the muscle fibers ONLY. 
D) nature of the neural stimulation ONLY.

Question 5

The force velocity curve describes the relationship between speed of muscle shortening (i.e. ,velocity of movement)and muscle force production.Which of the following statements are true about the influence of muscle fiber type on the force velocity curve?

Accepted Answer

A) At any given velocity of movement,the peak power generated is greater in a muscle that contains a high percentage of fast fibers (i.e. ,type IIx)compared with a muscle that contains a high percentage of slow fibers (i.e. ,type I). 
B) At any given velocity of movement,the peak power generated is lower in a muscle that contains a high percentage of fast fibers (i.e. ,type IIx)compared with a muscle that contains a high percentage of slow fibers (i.e. ,type I). 
C) At low movement speeds,the peak power generated is greater in a muscle that contains a high percentage of slow fibers (i.e. ,type I)compared with a muscle that contains a high percentage of fast fibers (i.e. ,type IIx). 
D) None of the above answers are correct. 
A) At any given velocity of movement,the peak power generated is greater in a muscle that contains a high percentage of fast fibers (i.e. ,type IIx)compared with a muscle that contains a high percentage of slow fibers (i.e. ,type I). 
B) At any given velocity of movement,the peak power generated is lower in a muscle that contains a high percentage of fast fibers (i.e. ,type IIx)compared with a muscle that contains a high percentage of slow fibers (i.e. ,type I). 
C) At low movement speeds,the peak power generated is greater in a muscle that contains a high percentage of slow fibers (i.e. ,type I)compared with a muscle that contains a high percentage of fast fibers (i.e. ,type IIx). 
D) None of the above answers are correct.

Question 6

Which type of muscle fiber has been shown to be the most efficient?

Accepted Answer

A) type I. 
B) type IIa. 
C) type IIx. 
D) type I and type IIx have equal efficiency. 
A) type I. 
B) type IIa. 
C) type IIx. 
D) type I and type IIx have equal efficiency.

Question 7

The breakdown of ATP in muscle is accomplished via the enzyme

Accepted Answer

A) lactate dehydrogenase. 
B) succinate dehydrogenase. 
C) ATPase. 
D) phosphofructokinase. 
A) lactate dehydrogenase. 
B) succinate dehydrogenase. 
C) ATPase. 
D) phosphofructokinase.

Question 8

In contrast to power athletes,endurance athletes typically possess a low percentage of slow fibers and a high percentage of fast fibers.

Accepted Answer

A) True 
 B)False

Question 9

Calcium is stored in muscle within the

Accepted Answer

A) Golgi organs. 
B) H zone. 
C) sarcoplasmic reticulum. 
D) sarcolemma. 
A) Golgi organs. 
B) H zone. 
C) sarcoplasmic reticulum. 
D) sarcolemma.

Question 10

If you continue to increase the firing rate (of action potentials)of a motor neuron,then all of the skeletal muscle fibers it innervates will eventually summate to reach tetanus.

Accepted Answer

A) True 
 B)False

The cell membrane around a muscle fiber is called the

Postactivation potentiation is defined as

The peak power generated by any skeletal muscle increases with increasing velocities of movement up to a movement speed of 200-300 degrees per second.Which of the following factors can explain this observation?

The amount of force exerted during muscular contraction is dependent on the

The force velocity curve describes the relationship between speed of muscle shortening (i.e. ,velocity of movement)and muscle force production.Which of the following statements are true about the influence of muscle fiber type on the force velocity curve?

Which type of muscle fiber has been shown to be the most efficient?

The breakdown of ATP in muscle is accomplished via the enzyme

In contrast to power athletes,endurance athletes typically possess a low percentage of slow fibers and a high percentage of fast fibers.

Calcium is stored in muscle within the

If you continue to increase the firing rate (of action potentials)of a motor neuron,then all of the skeletal muscle fibers it innervates will eventually summate to reach tetanus.

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

Circulatory Responses to Exercise

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

Filters

Exam 9: Skeletal Muscle: Structure and Function

The cell membrane around a muscle fiber is called the

Postactivation potentiation is defined as

The peak power generated by any skeletal muscle increases with increasing velocities of movement up to a movement speed of 200-300 degrees per second.Which of the following factors can explain this observation?

The amount of force exerted during muscular contraction is dependent on the

The force velocity curve describes the relationship between speed of muscle shortening (i.e. ,velocity of movement)and muscle force production.Which of the following statements are true about the influence of muscle fiber type on the force velocity curve?

Which type of muscle fiber has been shown to be the most efficient?

The breakdown of ATP in muscle is accomplished via the enzyme

In contrast to power athletes,endurance athletes typically possess a low percentage of slow fibers and a high percentage of fast fibers.

Calcium is stored in muscle within the

If you continue to increase the firing rate (of action potentials)of a motor neuron,then all of the skeletal muscle fibers it innervates will eventually summate to reach tetanus.

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

Circulatory Responses to Exercise

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

Filters