Question 1

Indicate which characteristic applies to which type of muscle.
-Length remains constant.

Accepted Answer

A) isometric contraction 
B) isotonic contraction 
A) isometric contraction 
B) isotonic contraction

Question 2

The T tubule ranges transversely to the surface of the muscle cell membrane.

Accepted Answer

A) True 
 B)False

Question 3

Indicate the characteristics of the muscle-tension receptors using the following answer code:
-Is activated by muscle stretch.

Accepted Answer

A) muscle spindle 
B) Golgi tendon organ 
C) both of these receptors 
A) muscle spindle 
B) Golgi tendon organ 
C) both of these receptors

Question 4

____________________ refers to paralysis of the legs resulting from lower spinal cord injury.

Accepted Answer

The answer of ____________________ refers to paralysis of the legs...

Question 5

Binding of ____ to myosin permits cross-bridge ____ between actin and myosin.

Accepted Answer

A)  ATP, binding. 
B)  ATP, detachment. 
C)  calcium, binding. 
D)  calcium, detachment. 
E)  none of these answers. 
A)  ATP, binding. 
B)  ATP, detachment. 
C)  calcium, binding. 
D)  calcium, detachment. 
E)  none of these answers.

Question 6

Which chemical(s) is/are required for contraction of smooth muscle fibers?

Accepted Answer

A)  calcium. 
B)  calmodulin. 
C)  phosphate. 
D)  ATP 
E)  all of these answers. 
A)  calcium. 
B)  calmodulin. 
C)  phosphate. 
D)  ATP 
E)  all of these answers.

Question 7

Muscle relaxation does not take place until all of the ATP is used up.

Accepted Answer

A) True 
 B)False

Question 8

Thin and thick filaments overlap in the A band.

Accepted Answer

A) True 
 B)False

Question 9

Twitch summation

Accepted Answer

A)  is a means by which gradation of muscle contraction may be accomplished. 
B)  results from increasing the number of motor units that are firing within a muscle. 
C)  results from increasing the frequency at which motor units are firing within a muscle. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above. 
A)  is a means by which gradation of muscle contraction may be accomplished. 
B)  results from increasing the number of motor units that are firing within a muscle. 
C)  results from increasing the frequency at which motor units are firing within a muscle. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above.

Question 10

Single-unit smooth muscle and cardiac muscle are both self-excitable.

Accepted Answer

A) True 
 B)False

Question 11

Multiunit smooth muscle is found: in the walls of large blood vessels and the heart.

Accepted Answer

A) True 
 B)False

Question 12

MATCHING: ART
   
The following questions relate to accompanying figure of the three types of muscle tissue. Use the figure to help match the following characteristics with the correct muscle type.
-Striated and voluntary

Accepted Answer

A) Skeletal muscle only 
B) Cardiac muscle only 
C) Smooth muscle only 
D) Skeletal and Cardiac muscle 
E) Cardiac and Smooth muscle
F)All three muscle types 
A) Skeletal muscle only 
B) Cardiac muscle only 
C) Smooth muscle only 
D) Skeletal and Cardiac muscle 
E) Cardiac and Smooth muscle
F)All three muscle types

Question 13

Myosin is

Accepted Answer

A)  spherical. 
B)  the main structural component of the thick filaments. 
C)  is referred to as a regulatory protein. 
D)  all of these answers. 
E)  none of these answers. 
A)  spherical. 
B)  the main structural component of the thick filaments. 
C)  is referred to as a regulatory protein. 
D)  all of these answers. 
E)  none of these answers.

Question 14

The work performed by a muscle is the force it develops divided by distance.

Accepted Answer

A) True 
 B)False

Question 15

If you wanted to pick up something heavier than your pencil (such as your book), you would need to have a stronger muscle contraction. In what way might you accomplish this?

Accepted Answer

A)  stimulate more motor units 
B)  decrease the frequency of stimulation to allow a more prolonged contraction to occur 
C)  decrease the refractory period 
D)  block acetylcholinesterase at the neuromuscular junction to allow acetylcholine to function longer 
E)  none of these answers. 
A)  stimulate more motor units 
B)  decrease the frequency of stimulation to allow a more prolonged contraction to occur 
C)  decrease the refractory period 
D)  block acetylcholinesterase at the neuromuscular junction to allow acetylcholine to function longer 
E)  none of these answers.

Question 16

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below:
-Basis of contraction is cross bridge interaction between actin and myosin.

Accepted Answer

A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles 
A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles

Question 17

Denervated muscle fibers become progressively smaller and their content of actin and myosin decreases.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is involved in the process of muscle relaxation

Accepted Answer

A)  acetylcholinesterase destroys acetylcholine to allow the muscle membrane to return to resting potential. 
B)  Ca2+ is released by the sarcoplasmic reticulum 
C)  cross bridge formation increases 
D)  both (a) and (b) above. 
E)  all of these answers. 
A)  acetylcholinesterase destroys acetylcholine to allow the muscle membrane to return to resting potential. 
B)  Ca2+ is released by the sarcoplasmic reticulum 
C)  cross bridge formation increases 
D)  both (a) and (b) above. 
E)  all of these answers.

Question 19

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below:
-Contraction is triggered as Ca²+ physically pulls troponin and tropomyosin from its blocking position over actin's binding sites for the cross bridges.

Accepted Answer

A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles 
A) skeletal muscle only 
B) single-unit smooth muscle only 
C) cardiac muscle only 
D) skeletal muscle and cardiac muscle 
E) skeletal muscle and single-unit smooth muscle
F)single-unit smooth muscle and cardiac muscle
G)skeletal, single-unit smooth, and cardiac muscles

Question 20

In general, the contraction of skeletal muscle lasts longer than contraction of smooth muscle.

Accepted Answer

A) True 
 B)False

Indicate which characteristic applies to which type of muscle. -Length remains constant.

The T tubule ranges transversely to the surface of the muscle cell membrane.

Indicate the characteristics of the muscle-tension receptors using the following answer code: -Is activated by muscle stretch.

____________________ refers to paralysis of the legs resulting from lower spinal cord injury.

Binding of to myosin permits cross-bridge between actin and myosin.

Which chemical(s) is/are required for contraction of smooth muscle fibers?

Muscle relaxation does not take place until all of the ATP is used up.

Thin and thick filaments overlap in the A band.

Twitch summation

Single-unit smooth muscle and cardiac muscle are both self-excitable.

Multiunit smooth muscle is found: in the walls of large blood vessels and the heart.

MATCHING: ART The following questions relate to accompanying figure of the three types of muscle tissue. Use the figure to help match the following characteristics with the correct muscle type. -Striated and voluntary

Myosin is

The work performed by a muscle is the force it develops divided by distance.

If you wanted to pick up something heavier than your pencil (such as your book), you would need to have a stronger muscle contraction. In what way might you accomplish this?

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Basis of contraction is cross bridge interaction between actin and myosin.

Denervated muscle fibers become progressively smaller and their content of actin and myosin decreases.

Which of the following is involved in the process of muscle relaxation

In general, the contraction of skeletal muscle lasts longer than contraction of smooth muscle.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Exam 8: Muscle Physiology

Indicate which characteristic applies to which type of muscle. -Length remains constant.

The T tubule ranges transversely to the surface of the muscle cell membrane.

Indicate the characteristics of the muscle-tension receptors using the following answer code: -Is activated by muscle stretch.

____________________ refers to paralysis of the legs resulting from lower spinal cord injury.

Binding of ____ to myosin permits cross-bridge ____ between actin and myosin.

Which chemical(s) is/are required for contraction of smooth muscle fibers?

Muscle relaxation does not take place until all of the ATP is used up.

Thin and thick filaments overlap in the A band.

Twitch summation

Single-unit smooth muscle and cardiac muscle are both self-excitable.

Multiunit smooth muscle is found: in the walls of large blood vessels and the heart.

MATCHING: ART The following questions relate to accompanying figure of the three types of muscle tissue. Use the figure to help match the following characteristics with the correct muscle type. -Striated and voluntary

Myosin is

The work performed by a muscle is the force it develops divided by distance.

If you wanted to pick up something heavier than your pencil (such as your book), you would need to have a stronger muscle contraction. In what way might you accomplish this?

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Basis of contraction is cross bridge interaction between actin and myosin.

Denervated muscle fibers become progressively smaller and their content of actin and myosin decreases.

Which of the following is involved in the process of muscle relaxation

In general, the contraction of skeletal muscle lasts longer than contraction of smooth muscle.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division and Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Binding of to myosin permits cross-bridge between actin and myosin.