Question 1

Which of the following correctly describes multiunit smooth muscle?

Accepted Answer

A) It is chemically activated. 
B) It is under ANS control. 
C)  It is found in the walls of the digestive system. 
D)  It is the most dominant component of smooth muscle. 
A) It is chemically activated. 
B) It is under ANS control. 
C)  It is found in the walls of the digestive system. 
D)  It is the most dominant component of smooth muscle.

Question 2

Central fatigue of a muscle results directly from the accumulation of lactic acid in the muscle.

Accepted Answer

A) True 
 B)False

Question 3

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.)
a.slow-oxidative fibre
b.fast-oxidative fibre
c.fast-glycolytic fibre
-uses up considerable glycogen

Accepted Answer

The answer of Match the muscle fibre types, labelled a....

Question 4

The two types of fast twitch fibres are interconvertible depending on the type of conditioning they receive.

Accepted Answer

A) True 
 B)False

Question 5

Tetanus occurs when a muscle fibre is stimulated so rapidly that it is not allowed to relax between stimulations, resulting in a smooth, sustained contraction.

Accepted Answer

A) True 
 B)False

Question 6

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.)
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
-contain(s) actin, myosin, troponin, and tropomyosin

Accepted Answer

The answer of Match the types of muscles, labelled a....

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

In order for relaxation to occur, ACh must be removed from the muscle cell's receptors.

Accepted Answer

A) True 
 B)False

Question 9

What is the functional unit of skeletal muscle?

Accepted Answer

A) largest contractile component of a muscle fibre 
B) area between two Z lines 
C)  sarcoplasmic reticulum 
D)  area between two I bands 
A) largest contractile component of a muscle fibre 
B) area between two Z lines 
C)  sarcoplasmic reticulum 
D)  area between two I bands

Question 10

The regulation of smooth muscle contraction is mediated by the phosphorylation of which filaments in response to calcium binding to proteins?

Accepted Answer

A) myosin, calmodulin 
B) actin, calmodulin 
C)  troponin, calmodulin 
D)  myosin, troponin 
A) myosin, calmodulin 
B) actin, calmodulin 
C)  troponin, calmodulin 
D)  myosin, troponin

Question 11

What is the cause of enlargement of muscle due to weight lifting?

Accepted Answer

A) hypotrophy 
B) hyperplasia 
C)  increased production of actin and myosin 
D)  dystrophy 
A) hypotrophy 
B) hyperplasia 
C)  increased production of actin and myosin 
D)  dystrophy

Question 12

Which of the following areas is the origin of a muscle?

Accepted Answer

A) the main, thick part of the structure 
B) the middle, thin part of the structure 
C)  the movable end of attachment 
D)  the stationary end of attachment 
A) the main, thick part of the structure 
B) the middle, thin part of the structure 
C)  the movable end of attachment 
D)  the stationary end of attachment

Question 13

Which of these statements does NOT correctly describe steroids?

Accepted Answer

A) Steroids can increase muscle mass when used in large amounts. 
B) Anabolic steroids and their derivatives are controlled substances in Canada. 
C)  Addiction to anabolic steroids is possible. 
D)  In females, anabolic steroids may favour ovulation. 
A) Steroids can increase muscle mass when used in large amounts. 
B) Anabolic steroids and their derivatives are controlled substances in Canada. 
C)  Addiction to anabolic steroids is possible. 
D)  In females, anabolic steroids may favour ovulation.

Question 14

Both multiunit and single-unit smooth muscles are under motor control from the autonomic nervous system.

Accepted Answer

A) True 
 B)False

Question 15

____________________ occurs when acetylcholine is no longer available in adequate amounts to stimulate muscle fibres.

Accepted Answer

Neuromuscu

Question 16

The _____________________ is the descending pathway that is concerned primarily with regulation of posture involving involuntary movements of the trunk and limbs.

Accepted Answer

multineuro

Question 17

Match the muscle-tension receptors, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.)
a.muscle spindle
b.Golgi tendon organ
c.both of these receptors
-activated by muscle stretch

Accepted Answer

The answer of Match the muscle-tension receptors, labelled a. through...

Question 18

What is the first means by which ATP is produced at the onset of contractile activity?

Accepted Answer

A) transfer of energy and phosphate from creatine phosphate to ADP 
B) oxidative phosphorylation 
C)  glycolysis 
D)  degradation of myoglobin 
A) transfer of energy and phosphate from creatine phosphate to ADP 
B) oxidative phosphorylation 
C)  glycolysis 
D)  degradation of myoglobin

Question 19

Which of these statements does NOT apply to cardiac muscle?

Accepted Answer

A) It contains gap junctions. 
B) It is found only in the heart. 
C)  It is self-excitable. 
D)  It lacks tropomyosin. 
A) It contains gap junctions. 
B) It is found only in the heart. 
C)  It is self-excitable. 
D)  It lacks tropomyosin.

Which of the following correctly describes multiunit smooth muscle?

Central fatigue of a muscle results directly from the accumulation of lactic acid in the muscle.

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.slow-oxidative fibre b.fast-oxidative fibre c.fast-glycolytic fibre -uses up considerable glycogen

The two types of fast twitch fibres are interconvertible depending on the type of conditioning they receive.

Tetanus occurs when a muscle fibre is stimulated so rapidly that it is not allowed to relax between stimulations, resulting in a smooth, sustained contraction.

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

In order for relaxation to occur, ACh must be removed from the muscle cell's receptors.

What is the functional unit of skeletal muscle?

The regulation of smooth muscle contraction is mediated by the phosphorylation of which filaments in response to calcium binding to proteins?

What is the cause of enlargement of muscle due to weight lifting?

Which of the following areas is the origin of a muscle?

Which of these statements does NOT correctly describe steroids?

Both multiunit and single-unit smooth muscles are under motor control from the autonomic nervous system.

____________________ occurs when acetylcholine is no longer available in adequate amounts to stimulate muscle fibres.

The _____________________ is the descending pathway that is concerned primarily with regulation of posture involving involuntary movements of the trunk and limbs.

Match the muscle-tension receptors, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.muscle spindle b.Golgi tendon organ c.both of these receptors -activated by muscle stretch

What is the first means by which ATP is produced at the onset of contractile activity?

Which of these statements does NOT apply to cardiac 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: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

Exam 6: The Peripheral Nervous System: Afferent Division; Special Senses

Which of the following correctly describes multiunit smooth muscle?

Central fatigue of a muscle results directly from the accumulation of lactic acid in the muscle.

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.slow-oxidative fibre b.fast-oxidative fibre c.fast-glycolytic fibre -uses up considerable glycogen

The two types of fast twitch fibres are interconvertible depending on the type of conditioning they receive.

Tetanus occurs when a muscle fibre is stimulated so rapidly that it is not allowed to relax between stimulations, resulting in a smooth, sustained contraction.

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

In order for relaxation to occur, ACh must be removed from the muscle cell's receptors.

What is the functional unit of skeletal muscle?

The regulation of smooth muscle contraction is mediated by the phosphorylation of which filaments in response to calcium binding to proteins?

What is the cause of enlargement of muscle due to weight lifting?

Which of the following areas is the origin of a muscle?

Which of these statements does NOT correctly describe steroids?

Both multiunit and single-unit smooth muscles are under motor control from the autonomic nervous system.

____________________ occurs when acetylcholine is no longer available in adequate amounts to stimulate muscle fibres.

The _____________________ is the descending pathway that is concerned primarily with regulation of posture involving involuntary movements of the trunk and limbs.

Match the muscle-tension receptors, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.muscle spindle b.Golgi tendon organ c.both of these receptors -activated by muscle stretch

What is the first means by which ATP is produced at the onset of contractile activity?

Which of these statements does NOT apply to cardiac 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: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters