Question 1

The branch of the nervous system that helps govern smooth muscle contraction is the _______ nervous system.

Accepted Answer

A)  autonomic
B)  somaticC) A) and B)
D) undefined

Question 2

The narrow space that separates the motor neuron and the skeletal muscle fiber in a neuromuscular junction is called the

Accepted Answer

A)  motor end plate.
B)  synaptic vesicle.
C)  synaptic cleft.
D)  synaptic knob.E) B) and C)
F) A) and B)

Question 3

Which are the reservoirs that store the calcium required for muscle contraction

Accepted Answer

A)  Synaptic vesicles
B)  Synaptic clefts
C)  Terminal cisternae
D)  Peroxisomes
E)  MitochondriaF) C) and D)
G) None of the above

Question 4

Which protein makes up the thick filaments

Accepted Answer

A)  Myosin
B)  Actin
C)  Tropomyosin
D)  Troponin
E)  MyopathyF) A) and E)
G) A) and B)

Question 5

Which structures are reservoirs that store acetylcholine

Accepted Answer

A)  Synaptic vesicles
B)  Synaptic clefts
C)  Terminal cisternae
D)  Lysosomes
E)  SarcomeresF) A) and B)
G) B) and E)

Question 6

Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle cell and thereby initiates the steps of contraction

Accepted Answer

A)  Acetylcholinesterase
B)  Acetylcholine
C)  Serotonin
D)  NorepinephrineE) None of the above
F) C) and D)

Question 7

The repolarization of the action potential involves the opening of

Accepted Answer

A)  chemically gated Na+channels.
B)  voltage-gated Na+channels.
C)  chemically gated K+channels.
D)  voltage-gated K+channels.E) All of the above
F) A) and D)

Question 8

A term that describes the change in muscle following a lack of exercise is

Accepted Answer

A)  proliferation.
B)  hypertrophy.
C)  convergence.
D)  atrophy.
E)  myofascia.F) B) and E)
G) A) and E)

Question 9

Which is the correct order of the connective tissue layers of a skeletal muscle,beginning with the most superficial
A: Endomysium
B: Epimysium
C: Perimysium

Accepted Answer

A)  a,b,c
B)  b,a,c
C)  c,a,b
D)  b,c,a
E)  c,b,aF) All of the above
G) A) and B)

Question 10

The number of satellite cells in skeletal muscle steadily decreases with age.

Accepted Answer

A) True 
 B)False

Question 11

What is the letter associated with the dark bands in a sarcomere

Accepted Answer

A)  I
B)  A
C)  Z
D)  M
E)  HF) All of the above
G) B) and D)

Question 12

Aerobic respiration involves the oxidation of pyruvate.

Accepted Answer

A) True 
 B)False

Question 13

In general,a muscle's resting length is its optimal length for force generation.

Accepted Answer

A) True 
 B)False

Question 14

Which may occur as a result of muscle atrophy

Accepted Answer

A)  Reduction in muscle size
B)  Fibers become weaker
C)  Muscle loses tone
D)  Fibers waste away and die
E)  All of the choices are correct.F) None of the above
G) A) and E)

Question 15

To initiate a smooth muscle cell contraction,calcium enters the cell and binds to

Accepted Answer

A)  troponin,which then activates myosin light-chain kinase.
B)  calmodulin,which then binds to and activates myosin light-chain kinase.
C)  a myosin head,which then activates calmodulin.
D)  myosin light-chain kinase,which then hydrolyzes ATP.
E)  a phosphatase,which then removes the tropomyosin blockade.F) B) and E)
G) C) and D)

Question 16

Myosin kinase catalyzes the transfer of Pifrom creatine phosphate to ADP.

Accepted Answer

A) True 
 B)False

Question 17

If someone is engaged in six minutes of vigorous exercise,nearly all of the ATP used is generated by phosphate transfer.

Accepted Answer

A) True 
 B)False

Question 18

Compared to slow-twitch fibers,fast-twitch fibers respond to a stimulus with less delay and with a shorter contraction duration.

Accepted Answer

A) True 
 B)False

Question 19

During aging,muscle is often replaced by dense connective tissue,a process called _________.

Accepted Answer

The answer of During aging,muscle is often replaced by dense...

Question 20

A motor unit within the powerful quadriceps muscle would

Accepted Answer

A)  contain several motor neurons.
B)  be much like those in the eye muscles.
C)  generally contain less than ten fibers.
D)  generally contain several hundred fibers.E) C) and D)
F) A) and D)

Exam 10: Muscle Tissue

Which is the neurotransmitter that causes the release of calcium ions from reservoirs within the muscle cell and thereby initiates the steps of contraction

Correct AnswerverifiedShow Answer

What is the letter associated with the dark bands in a sarcomere

Correct AnswerverifiedShow Answer

Compared to slow-twitch fibers,fast-twitch fibers respond to a stimulus with less delay and with a shorter contraction duration.

Correct AnswerverifiedShow Answer

During aging,muscle is often replaced by dense connective tissue,a process called _________.

Correct AnswerverifiedShow Answer

The repolarization of the action potential involves the opening of

Correct AnswerverifiedShow Answer

Which is the correct order of the connective tissue layers of a skeletal muscle,beginning with the most superficial A: Endomysium B: Epimysium C: Perimysium

Correct AnswerverifiedShow Answer

Which protein makes up the thick filaments

Correct AnswerverifiedShow Answer

The branch of the nervous system that helps govern smooth muscle contraction is the _______ nervous system.

Correct AnswerverifiedShow Answer

If someone is engaged in six minutes of vigorous exercise,nearly all of the ATP used is generated by phosphate transfer.

Correct AnswerverifiedShow Answer

Which structures are reservoirs that store acetylcholine

Correct AnswerverifiedShow Answer

Aerobic respiration involves the oxidation of pyruvate.

Correct AnswerverifiedShow Answer

The narrow space that separates the motor neuron and the skeletal muscle fiber in a neuromuscular junction is called the

Correct AnswerverifiedShow Answer

A motor unit within the powerful quadriceps muscle would

Correct AnswerverifiedShow Answer

To initiate a smooth muscle cell contraction,calcium enters the cell and binds to

Correct AnswerverifiedShow Answer

In general,a muscle's resting length is its optimal length for force generation.

Correct AnswerverifiedShow Answer

Which are the reservoirs that store the calcium required for muscle contraction

Correct AnswerverifiedShow Answer

A term that describes the change in muscle following a lack of exercise is

Correct AnswerverifiedShow Answer

The number of satellite cells in skeletal muscle steadily decreases with age.

Correct AnswerverifiedShow Answer

Which may occur as a result of muscle atrophy

Correct AnswerverifiedShow Answer

Myosin kinase catalyzes the transfer of Pifrom creatine phosphate to ADP.

Correct AnswerverifiedShow Answer

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Myosin kinase catalyzes the transfer of P_ifrom creatine phosphate to ADP.

Correct Answer
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