Question 1

Match the following:
-Abundant in muscles used to maintain posture.

Accepted Answer

A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers 
A) Slow (oxidative), fatigue-resistant fibers 
B) Fast (oxidative or glycolytic), fatigable fibers 
C) fast (oxidative or glycolytic), fatigable fibers

Question 2

Only ________ muscle cells commonly branch.

Accepted Answer

The answer of Only ________ muscle cells commonly branch....

Question 3

The effect of a neurotransmitter on the muscle cell membrane is to modify its ion permeability properties temporarily.

Accepted Answer

A) True 
 B)False

Question 4

Briefly explain the sources of energy for a one-minute sustained muscle contraction.

Accepted Answer

1.The first 4-6 seconds of energy come f

Question 5

Lynn has been waking up each night with intense pain in her calves.She does not feel that it is serious enough to seek medical attention but would like to know what is causing the pain.What would you tell her concerning this problem? She has been playing tennis all summer for several hours each day.Could this have anything to do with the night pain?

Accepted Answer

This is due to sustained spasm,or tetani

Question 6

Figure 9.2
Using Figure 9.2, match the following:
-A band.

Accepted Answer

A) E 
B) A 
C) D 
D) C 
E) B 
A) E 
B) A 
C) D 
D) C 
E) B

Question 7

After nervous stimulation stops,what prevents ACh in the synaptic cleft from continuing to stimulate contraction?

Accepted Answer

A)  the tropomyosin blocking the myosin once full contraction is achieved 
B)  acetylcholinesterase destroying the ACh 
C)  calcium ions returning to the terminal cisternae 
D)  the action potential stops going down the overloaded T tubules 
A)  the tropomyosin blocking the myosin once full contraction is achieved 
B)  acetylcholinesterase destroying the ACh 
C)  calcium ions returning to the terminal cisternae 
D)  the action potential stops going down the overloaded T tubules

Question 8

If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm)and the intracellular calcium concentration would rise.Which of the following would you expect to happen?

Accepted Answer

A)  The fiber would twitch uncontrollably due to excessive calcium bound to troponin. 
B)  Myosin would be able to bind to the exposed binding sites on thin filaments but it would not be able to detach. 
C)  Calcium would be transported to the sarcoplasmic reticulum therefore contractions would cease. 
D)  No change would occur in a muscle that was relaxed to begin with. 
A)  The fiber would twitch uncontrollably due to excessive calcium bound to troponin. 
B)  Myosin would be able to bind to the exposed binding sites on thin filaments but it would not be able to detach. 
C)  Calcium would be transported to the sarcoplasmic reticulum therefore contractions would cease. 
D)  No change would occur in a muscle that was relaxed to begin with.

Question 9

Match the following:
-Determined by alternating motor units of a muscle organ even when the muscle is at rest.

Accepted Answer

A) Tetanus 
B) Maximal stimulus 
C) Wave summation 
D) Muscle tone 
E) Multiple motor unit summation 
A) Tetanus 
B) Maximal stimulus 
C) Wave summation 
D) Muscle tone 
E) Multiple motor unit summation

Question 10

Addition of more mitochondria to a muscle fiber will have the least effect on ________.

Accepted Answer

A)  slow oxidative fibers 
B)  fast glycolytic fibers 
C)  fast oxidative fibers 
D)  both slow and fast oxidative fibers 
A)  slow oxidative fibers 
B)  fast glycolytic fibers 
C)  fast oxidative fibers 
D)  both slow and fast oxidative fibers

Question 11

Of the following muscle types,which has only one nucleus,no sarcomeres,and few gap junctions?

Accepted Answer

A)  skeletal muscle 
B)  multiunit smooth muscle 
C)  cardiac muscle 
D)  visceral smooth muscle 
A)  skeletal muscle 
B)  multiunit smooth muscle 
C)  cardiac muscle 
D)  visceral smooth muscle

Question 12

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

Accepted Answer

A) True 
 B)False

Question 13

Describe the anatomical parts of the muscle triad and how the function of these organelles work together to initiate contraction.

Accepted Answer

The parts of the muscle triad are two ad

Question 14

Match the following:
-A sarcomere is the distance between two ________.

Accepted Answer

A) A band 
B) Z discs 
C) I band 
D) Myosin 
A) A band 
B) Z discs 
C) I band 
D) Myosin

Question 15

Which of the following statements best illustrates the fact that skeletal muscle is voluntary muscle?

Accepted Answer

A)  Skeletal muscle is wrapped in several layers of connective tissue. The deepest layer being the endomysium. 
B)  Skeletal muscle appears striated due to the structure of the sarcomeres. 
C)  Skeletal muscle fibers are innervated by somatic motor neurons. 
D)  The shivering reflex aids in maintaining body temperature. 
A)  Skeletal muscle is wrapped in several layers of connective tissue. The deepest layer being the endomysium. 
B)  Skeletal muscle appears striated due to the structure of the sarcomeres. 
C)  Skeletal muscle fibers are innervated by somatic motor neurons. 
D)  The shivering reflex aids in maintaining body temperature.

Question 16

How is it that norepinephrine (NE)can inhibit smooth muscle action in airways,yet stimulate contractions in smooth muscles everywhere else in the body?

Accepted Answer

Norepinephrine's effects depen

Question 17

Match the following:
-A neurotransmitter released at motor end plates by the axon terminals.

Accepted Answer

A) Sodium ions 
B) Acetylcholinesterase 
C) Calcium ions 
D) Acetylcholine 
E) Creatine phosphate 
A) Sodium ions 
B) Acetylcholinesterase 
C) Calcium ions 
D) Acetylcholine 
E) Creatine phosphate

Question 18

The force of muscle contraction is controlled by multiple motor unit summation or recruitment.

Accepted Answer

A) True 
 B)False

Question 19

When a muscle fiber contracts,the I bands diminish in size,the H zones disappear,and the A bands do not diminish in length.

Accepted Answer

A) True 
 B)False

Question 20

Once a motor neuron has fired,all the muscle fibers in a muscle contract.

Accepted Answer

A) True 
 B)False

Exam 9: Muscles and Muscle Tissue

Match the following: -Abundant in muscles used to maintain posture.

Only ________ muscle cells commonly branch.

The effect of a neurotransmitter on the muscle cell membrane is to modify its ion permeability properties temporarily.

Briefly explain the sources of energy for a one-minute sustained muscle contraction.

Figure 9.2 Using Figure 9.2, match the following: -A band.

After nervous stimulation stops,what prevents ACh in the synaptic cleft from continuing to stimulate contraction?

If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm)and the intracellular calcium concentration would rise.Which of the following would you expect to happen?

Match the following: -Determined by alternating motor units of a muscle organ even when the muscle is at rest.

Addition of more mitochondria to a muscle fiber will have the least effect on ________.

Of the following muscle types,which has only one nucleus,no sarcomeres,and few gap junctions?

A motor neuron and all the muscle cells that it stimulates are referred to as a motor end plate.

Describe the anatomical parts of the muscle triad and how the function of these organelles work together to initiate contraction.

Match the following: -A sarcomere is the distance between two ________.

Which of the following statements best illustrates the fact that skeletal muscle is voluntary muscle?

How is it that norepinephrine (NE)can inhibit smooth muscle action in airways,yet stimulate contractions in smooth muscles everywhere else in the body?

Match the following: -A neurotransmitter released at motor end plates by the axon terminals.

The force of muscle contraction is controlled by multiple motor unit summation or recruitment.

When a muscle fiber contracts,the I bands diminish in size,the H zones disappear,and the A bands do not diminish in length.

Once a motor neuron has fired,all the muscle fibers in a muscle contract.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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