Question 1

What type of muscle fiber will be more resistant to fatigue?

Accepted Answer

A)  Fast fiber 
B)  Slow fiber 
A)  Fast fiber 
B)  Slow fiber

Question 2

The time between the stimulation of a muscle fiber and the beginning of contraction iscalled the __________ period.

Accepted Answer

The answer of The time between the stimulation of a...

Question 3

What is the effect of an increased concentration of calcium ion in the sarcoplasm?

Accepted Answer

A)  Actin binding sites become exposed. 
B)  Myosin binding sites become exposed. 
C)  Troponin binding sites become exposed. 
D)  Actin and myosin become unable to accomplish contraction. 
A)  Actin binding sites become exposed. 
B)  Myosin binding sites become exposed. 
C)  Troponin binding sites become exposed. 
D)  Actin and myosin become unable to accomplish contraction.

Question 4

How is creatine phosphate used by muscle cells?

Accepted Answer

A)  It causes the decomposition of ATP. 
B)  It forms part of the thin filaments. 
C)  It is used to regenerate ATP. 
D)  It supplies energy for the breakdown ofATP to ADP. 
E)  It breaks down acetylcholine, allowing relaxation to occur. 
A)  It causes the decomposition of ATP. 
B)  It forms part of the thin filaments. 
C)  It is used to regenerate ATP. 
D)  It supplies energy for the breakdown ofATP to ADP. 
E)  It breaks down acetylcholine, allowing relaxation to occur.

Question 5

What term refers to the increase in the number of motor units activated as a result ofmore intensestimulation?

Accepted Answer

A)  Twitch 
B)  Recruitment 
C)  Threshold stimulation 
D)  All-or-none response 
E)  Summation 
A)  Twitch 
B)  Recruitment 
C)  Threshold stimulation 
D)  All-or-none response 
E)  Summation

Question 6

What happens to a muscle that has lost its innervation?

Accepted Answer

A)  It undergoes hypertrophy. 
B)  It stimulates the formation of new motor neurons. 
C)  It undergoes atrophy. 
D)  The muscle fibers enlarge in order to still undergo contraction. 
A)  It undergoes hypertrophy. 
B)  It stimulates the formation of new motor neurons. 
C)  It undergoes atrophy. 
D)  The muscle fibers enlarge in order to still undergo contraction.

Question 7

The muscle most responsible for a particular movement is called the prime mover or antagonist.

Accepted Answer

A) True 
 B)False

Question 8

What is the action of the enzyme acetylcholinesterase?

Accepted Answer

A)  Needed for acetylcholine bind to troponin 
B)  Causes secretion of acetylcholine into synaptic cleft 
C)  Breaks down acetylcholine 
D)  Forms cross-bridge between acetylcholine molecules and acetylcholine receptors 
E)  Stimulates production of acetylcholine within synaptic vesicles 
A)  Needed for acetylcholine bind to troponin 
B)  Causes secretion of acetylcholine into synaptic cleft 
C)  Breaks down acetylcholine 
D)  Forms cross-bridge between acetylcholine molecules and acetylcholine receptors 
E)  Stimulates production of acetylcholine within synaptic vesicles

Question 9

Name the membranouschannels or tunnels that extend inward from

Accepted Answer

A)  Sarcomeres 
B)  Myofibrils 
C)  Transverse tubules 
D)  Cisternae 
E)  Motor end plates 
A)  Sarcomeres 
B)  Myofibrils 
C)  Transverse tubules 
D)  Cisternae 
E)  Motor end plates

Question 10

Name the membranouschannels or tunnels that extend inward from

Accepted Answer

A)  Sarcomeres 
B)  Myofibrils 
C)  Transverse tubules 
D)  Cisternae 
E)  Motor end plates 
A)  Sarcomeres 
B)  Myofibrils 
C)  Transverse tubules 
D)  Cisternae 
E)  Motor end plates

Question 11

What forms the myofibrils of skeletal muscle cells?

Accepted Answer

A)  Actin and myosin 
B)  ATP and ADP 
C)  Troponin and tropomyosin 
D)  Fascia and tendons 
E)  Perimysium and endomysium 
A)  Actin and myosin 
B)  ATP and ADP 
C)  Troponin and tropomyosin 
D)  Fascia and tendons 
E)  Perimysium and endomysium

Question 12

By what means does an electrical impulse travel deep into a skeletal muscle fiber in order to trigger a contraction?

Accepted Answer

A)  Via the sarcoplasmic reticulum 
B)  Via transverse tubules 
C)  Via mitochondria 
D)  Via motor end plates 
E)  Via gap junctions 
A)  Via the sarcoplasmic reticulum 
B)  Via transverse tubules 
C)  Via mitochondria 
D)  Via motor end plates 
E)  Via gap junctions

Question 13

What term refers to the attachment point for the movable end of the muscle?

Accepted Answer

A)  Origin 
B)  Fulcrum 
C)  Insertion 
D)  Motor end plate 
E)  Source 
A)  Origin 
B)  Fulcrum 
C)  Insertion 
D)  Motor end plate 
E)  Source

Question 14

During the process of glycolysis, the breakdown of one glucose molecules results in production of two ATP molecules.

Accepted Answer

A) True 
 B)False

Question 15

Enlarged portions of the sarcoplasmic reticulum are called __________.

Accepted Answer

A)  synaptic clefts 
B)  cisternae 
C)  H zones 
D)  T tubules 
E)  motor end plates 
A)  synaptic clefts 
B)  cisternae 
C)  H zones 
D)  T tubules 
E)  motor end plates

Question 16

Compared to skeletal muscle, smooth muscle contracts __________ and relaxes __________.

Accepted Answer

A)  more slowly; more slowly 
B)  more slowly; more rapidly 
C)  more rapidly; more slowly 
D)  more rapidly; more rapidly 
A)  more slowly; more slowly 
B)  more slowly; more rapidly 
C)  more rapidly; more slowly 
D)  more rapidly; more rapidly

Question 17

The characteristic reddish color of skeletal muscle is due to the presence of what substance?

Accepted Answer

A)  Actin 
B)  Myosin 
C)  Myoglobin 
D)  Calcium 
E)  Glycogen 
A)  Actin 
B)  Myosin 
C)  Myoglobin 
D)  Calcium 
E)  Glycogen

Question 18

What neurotransmitter is used to stimulate skeletal muscle contraction?

Accepted Answer

A)  Norepinephrine 
B)  Actin 
C)  Acetylcholine 
D)  Tropomyosin 
E)  ATP 
A)  Norepinephrine 
B)  Actin 
C)  Acetylcholine 
D)  Tropomyosin 
E)  ATP

Question 19

What neurotransmitter is used to stimulate skeletal muscle contraction?

Accepted Answer

A)  Norepinephrine 
B)  Actin 
C)  Acetylcholine 
D)  Tropomyosin 
E)  ATP 
A)  Norepinephrine 
B)  Actin 
C)  Acetylcholine 
D)  Tropomyosin 
E)  ATP

Question 20

What is an example of a partial but sustained contraction of a whole muscle?

Accepted Answer

A)  Blinking an eyelid 
B)  Tetanic contraction 
C)  Muscle twitch 
D)  Maintenance of posture 
E)  Motor unit fatigue 
A)  Blinking an eyelid 
B)  Tetanic contraction 
C)  Muscle twitch 
D)  Maintenance of posture 
E)  Motor unit fatigue

What type of muscle fiber will be more resistant to fatigue?

The time between the stimulation of a muscle fiber and the beginning of contraction iscalled the __________ period.

What is the effect of an increased concentration of calcium ion in the sarcoplasm?

How is creatine phosphate used by muscle cells?

What term refers to the increase in the number of motor units activated as a result ofmore intensestimulation?

What happens to a muscle that has lost its innervation?

The muscle most responsible for a particular movement is called the prime mover or antagonist.

What is the action of the enzyme acetylcholinesterase?

Name the membranouschannels or tunnels that extend inward from

Name the membranouschannels or tunnels that extend inward from

What forms the myofibrils of skeletal muscle cells?

By what means does an electrical impulse travel deep into a skeletal muscle fiber in order to trigger a contraction?

What term refers to the attachment point for the movable end of the muscle?

During the process of glycolysis, the breakdown of one glucose molecules results in production of two ATP molecules.

Enlarged portions of the sarcoplasmic reticulum are called __________.

Compared to skeletal muscle, smooth muscle contracts and relaxes .

The characteristic reddish color of skeletal muscle is due to the presence of what substance?

What neurotransmitter is used to stimulate skeletal muscle contraction?

What neurotransmitter is used to stimulate skeletal muscle contraction?

What is an example of a partial but sustained contraction of a whole muscle?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

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Exam 8: Muscular System

What type of muscle fiber will be more resistant to fatigue?

The time between the stimulation of a muscle fiber and the beginning of contraction iscalled the __________ period.

What is the effect of an increased concentration of calcium ion in the sarcoplasm?

How is creatine phosphate used by muscle cells?

What term refers to the increase in the number of motor units activated as a result ofmore intensestimulation?

What happens to a muscle that has lost its innervation?

The muscle most responsible for a particular movement is called the prime mover or antagonist.

What is the action of the enzyme acetylcholinesterase?

Name the membranouschannels or tunnels that extend inward from

Name the membranouschannels or tunnels that extend inward from

What forms the myofibrils of skeletal muscle cells?

By what means does an electrical impulse travel deep into a skeletal muscle fiber in order to trigger a contraction?

What term refers to the attachment point for the movable end of the muscle?

During the process of glycolysis, the breakdown of one glucose molecules results in production of two ATP molecules.

Enlarged portions of the sarcoplasmic reticulum are called __________.

Compared to skeletal muscle, smooth muscle contracts __________ and relaxes __________.

The characteristic reddish color of skeletal muscle is due to the presence of what substance?

What neurotransmitter is used to stimulate skeletal muscle contraction?

What neurotransmitter is used to stimulate skeletal muscle contraction?

What is an example of a partial but sustained contraction of a whole muscle?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Filters

Compared to skeletal muscle, smooth muscle contracts and relaxes .