Question 1

Calcium ions are released from the sarcoplasmic reticulum into the cytosol

Accepted Answer

A)  at the beginning of a contraction.
B)  in response to acetylcholine binding to Ca2+ release channels.
C)  by active transport using Ca2+ pumps in the SR membrane.
D)  after the contraction ends.
E)  All of these answers are correct.

Question 2

Leg muscles are predominantly composed of which type of muscle fiber?

Accepted Answer

A)  slow oxidative
B)  fast glycolytic
C)  fast oxidative-glycolytic
D)  slow glycolytic
E)  fast oxidative C

Question 3

In the diagram,which structure helps return a stretched sarcomere to its resting length?

Accepted Answer

A)  B
B)  C
C)  E
D)  Both B and C
E)  All of these choices are correct.

Question 4

Which of the following proteins is used to reinforce the sarcolemma and to help transmit the tension generated by the sarcomeres to the tendons?

Accepted Answer

A)  troponin
B)  tropomyosin
C)  myosin
D)  actin
E)  dystrophin

Question 5

Which of the following functions as a motor protein in all three types of muscle tissue?

Accepted Answer

A)  actin
B)  myosin
C)  troponin
D)  titin
E)  tropomyosin

Question 6

In the diagram,where would you find stored Ca2+?
2+?   A) B B) D C) G D) F E) K" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  B
B)  D
C)  G
D)  F
E)  K

Question 7

In the diagram,what is the basic functional unit of a myofibril?

Accepted Answer

A)  B
B)  C
C)  F
D)  Both B and C
E)  All of these choices are correct.

Question 8

What are the three ways that ATP can be produced in muscle fibers?

Accepted Answer

ATP can be produced from creat...

Question 9

Which of the following is referred to as the period of lost excitability in skeletal muscle fibers?

Accepted Answer

A)  refractory period
B)  contraction period
C)  latent period
D)  relaxation period
E)  wave summation

Question 10

Which area of the myogram shows sustained contraction with partial relaxation?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  none of these choices

Question 11

Which of the following consists of a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Accepted Answer

A)  sarcomere
B)  motor unit
C)  neuromuscular junction
D)  muscle unit
E)  multi-unit smooth muscle

Question 12

Which is a NOT a side-effect of anabolic steroid use by male athletes?

Accepted Answer

A)  sterility
B)  baldness
C)  diminished testosterone secretion
D)  deepening of the voice
E)  atrophy of testes

Question 13

Which of the following describe the regeneration capacity of cardiac muscle cells?

Accepted Answer

A)  limited,via satellite cells
B)  limited,under certain conditions
C)  considerable (compared with other muscle cells,but limited compared with epithelium) ,via pericytes
D)  all of these are correct
E)  none of these are correct

Question 14

Smooth muscle tone is maintained by the prolonged presence of _____ in the muscle cell's cytosol?

Accepted Answer

A)  ATP
B)  calcium ions
C)  phosphate ions
D)  myoglobin
E)  None of these choices. B

Question 15

Which property of muscle gives it the ability to stretch without damage?

Accepted Answer

A)  electrical excitability
B)  contractility
C)  extensibility
D)  elasticity
E)  thermogenesis

Question 16

In the diagram,which structure(s) moves towards the center of the sarcomere (closer together) when the fiber contracts?

Accepted Answer

A)  A
B)  D
C)  J
D)  Both A and D.
E)  None of these are correct.

Question 17

What is the major difference between the two types of smooth muscle tissue?

Accepted Answer

In single-unit smooth muscle tissue,acti...

Question 18

In the diagram,a tendon is formed by the merging of the following structures

Accepted Answer

A)  C,D,and H
B)  D and E
C)  H and C
D)  C and D
E)  All of these choices are correct.

Question 19

In the diagram,individual muscle fibers are covered by this layer.

Accepted Answer

A)  K
B)  I
C)  L
D)  M
E)  A C

Question 20

Which area of the myogram shows a sustained contraction where individual twitches are indiscernible?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  none of these choices

Exam 10: Muscle Tissue

Calcium ions are released from the sarcoplasmic reticulum into the cytosol

Correct AnswerverifiedShow Answer

Leg muscles are predominantly composed of which type of muscle fiber?

Correct AnswerverifiedC

In the diagram,which structure helps return a stretched sarcomere to its resting length?

Correct AnswerverifiedShow Answer

Which of the following proteins is used to reinforce the sarcolemma and to help transmit the tension generated by the sarcomeres to the tendons?

Correct AnswerverifiedShow Answer

Which of the following functions as a motor protein in all three types of muscle tissue?

Correct AnswerverifiedShow Answer

In the diagram,where would you find stored Ca2+?

Correct AnswerverifiedShow Answer

In the diagram,what is the basic functional unit of a myofibril?

Correct AnswerverifiedShow Answer

What are the three ways that ATP can be produced in muscle fibers?

Correct AnswerverifiedATP can be produced from creat...View AnswerShow Answer

Which of the following is referred to as the period of lost excitability in skeletal muscle fibers?

Correct AnswerverifiedShow Answer

Which area of the myogram shows sustained contraction with partial relaxation?

Correct AnswerverifiedShow Answer

Which of the following consists of a somatic motor neuron and all the skeletal muscle fibers it stimulates?

Correct AnswerverifiedShow Answer

Which is a NOT a side-effect of anabolic steroid use by male athletes?

Correct AnswerverifiedShow Answer

Which of the following describe the regeneration capacity of cardiac muscle cells?

Correct AnswerverifiedShow Answer

Smooth muscle tone is maintained by the prolonged presence of _____ in the muscle cell's cytosol?

Correct AnswerverifiedB

Which property of muscle gives it the ability to stretch without damage?

Correct AnswerverifiedShow Answer

In the diagram,which structure(s) moves towards the center of the sarcomere (closer together) when the fiber contracts?

Correct AnswerverifiedShow Answer

What is the major difference between the two types of smooth muscle tissue?

Correct AnswerverifiedIn single-unit smooth muscle tissue,acti...View AnswerShow Answer

In the diagram,a tendon is formed by the merging of the following structures

Correct AnswerverifiedShow Answer

In the diagram,individual muscle fibers are covered by this layer.

Correct AnswerverifiedC

Which area of the myogram shows a sustained contraction where individual twitches are indiscernible?

Correct AnswerverifiedShow Answer

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C

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In the diagram,where would you find stored Ca²⁺?

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ATP can be produced from creat...
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B

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In single-unit smooth muscle tissue,acti...
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C

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