Question 1

Which of the following types of muscle tissue is capable of undergoing the stress-relaxation response when they are stretched?

Accepted Answer

A)  cardiac muscle fibers
B)  fast glycolytic fibers
C)  fast oxidative-glycolytic fibers
D)  slow oxidative fibers
E)  single-unit smooth muscle fibers

Question 2

Which of the following structures are made of dense regular connective tissue?

Accepted Answer

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

Question 3

To stimulate skeletal muscle contraction,acetylcholine must cross the _____ of the neuromuscular junction and bind to receptors on the motor endplate.

Accepted Answer

A)  node of Ranvier
B)  synaptic cleft
C)  sarcolemma
D)  synaptic end bulb
E)  transverse tubule

Question 4

During muscle contraction by the sliding filament mechanism,thin filaments are pulled towards the

Accepted Answer

A)  Z disc.
B)  H zone.
C)  M line.
D)  A band.
E)  I band.

Question 5

Which of following is a common characteristic of fast glycolytic (FG) skeletal muscle fibers?

Accepted Answer

A)  large amount of myoglobin.
B)  many mitochondria.
C)  low concentration of creatine kinase in the sarcoplasm.
D)  slow myosin ATPase.
E)  high amount of glycogen in the sarcoplasm.

Question 6

In the diagram,which labeled structure contains motor proteins that convert the energy in ATP into mechanical movements?

Accepted Answer

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

Question 7

In the diagram,where is the I band?

Accepted Answer

A)  G
B)  H
C)  I
D)  J
E)  D

Question 8

This is the outermost layer of connective tissue surrounding a skeletal muscle.

Accepted Answer

A)  tendon
B)  ligament
C)  endomysium
D)  epimysium
E)  perimysium

Question 9

The contractile organelles of a skeletal muscle fiber are thread-like structures called

Accepted Answer

A)  myofibrils.
B)  myoglobin.
C)  mitochondria.
D)  Z discs.
E)  M lines.

Question 10

Which figure exhibits a contraction of the biceps brachii muscle in which its length increases?

Accepted Answer

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

Question 11

Which of the following types of muscle tissue contract when excited by their own autorhythmic muscle fibers?

Accepted Answer

A)  cardiac muscle
B)  slow twitch oxidative skeletal muscle
C)  multi-unit smooth muscle
D)  fast twitch glycolytic skeletal muscle
E)  All of these choices are correct.

Question 12

Which of the following regions of a sarcomere contain thin filaments?

Accepted Answer

A)  I band
B)  A band
C)  H zone
D)  Both I band and A band.
E)  All of these answer choices are correct.

Question 13

After the fusion of myoblasts,the muscle fiber loses its ability to do what?

Accepted Answer

A)  grow
B)  lengthen
C)  contract
D)  go through cell division.
E)  all of the answer choices

Question 14

The different types of muscle tissue differ from each other by

Accepted Answer

A)  microscopic anatomy.
B)  location.
C)  type of Control.
D)  both microscopic anatomy and location.
E)  All of these choices are correct.

Question 15

During which period of a twitch contraction does the muscle action potential move along the sarcolemma of the muscle cell and trigger calcium release into the sarcoplasm?

Accepted Answer

A)  latent period
B)  contraction period
C)  relaxation period
D)  absolute refractory period
E)  relative refractory period

Question 16

Which of the following regions of the sarcomere contain thick filaments?

Accepted Answer

A)  zone of overlap
B)  A band
C)  H zone
D)  both A band and H zone
E)  All of these answer choices are correct.

Question 17

In the diagram,the neurotransmitter,acetylcholine,is released from this area.

Accepted Answer

A)  B
B)  C
C)  D
D)  G
E)  H

Question 18

Which of the following is NOT a major function of muscle tissue?

Accepted Answer

A)  moving blood throughout the body
B)  generating heat through contractions
C)  stabilizing the movement of joints
D)  promoting movement of body structures
E)  production of vitamins.

Question 19

Which of the following microscopic structures is only found in the cardiac muscle tissue?

Accepted Answer

A)  myosin
B)  tropomyosin
C)  sarcomeres
D)  intercalated discs
E)  striations

Question 20

Increasing the number of active motor units within a skeletal muscle is called

Accepted Answer

A)  wave summation.
B)  fused tetanus.
C)  motor unit recruitment.
D)  muscle tone.
E)  flaccidity.

Exam 10: Muscle Tissue

During which period of a twitch contraction does the muscle action potential move along the sarcolemma of the muscle cell and trigger calcium release into the sarcoplasm?

Correct AnswerverifiedShow Answer

The different types of muscle tissue differ from each other by

Correct AnswerverifiedShow Answer

Which of the following microscopic structures is only found in the cardiac muscle tissue?

Correct AnswerverifiedShow Answer

Which of following is a common characteristic of fast glycolytic (FG) skeletal muscle fibers?

Correct AnswerverifiedShow Answer

Which of the following types of muscle tissue contract when excited by their own autorhythmic muscle fibers?

Correct AnswerverifiedShow Answer

The contractile organelles of a skeletal muscle fiber are thread-like structures called

Correct AnswerverifiedShow Answer

Which of the following is NOT a major function of muscle tissue?

Correct AnswerverifiedShow Answer

In the diagram,which labeled structure contains motor proteins that convert the energy in ATP into mechanical movements?

Correct AnswerverifiedShow Answer

Increasing the number of active motor units within a skeletal muscle is called

Correct AnswerverifiedShow Answer

Which figure exhibits a contraction of the biceps brachii muscle in which its length increases?

Correct AnswerverifiedShow Answer

Which of the following regions of a sarcomere contain thin filaments?

Correct AnswerverifiedShow Answer

In the diagram,where is the I band?

Correct AnswerverifiedShow Answer

In the diagram,the neurotransmitter,acetylcholine,is released from this area.

Correct AnswerverifiedShow Answer

To stimulate skeletal muscle contraction,acetylcholine must cross the _____ of the neuromuscular junction and bind to receptors on the motor endplate.

Correct AnswerverifiedShow Answer

This is the outermost layer of connective tissue surrounding a skeletal muscle.

Correct AnswerverifiedShow Answer

After the fusion of myoblasts,the muscle fiber loses its ability to do what?

Correct AnswerverifiedShow Answer

Which of the following regions of the sarcomere contain thick filaments?

Correct AnswerverifiedShow Answer

Which of the following structures are made of dense regular connective tissue?

Correct AnswerverifiedShow Answer

During muscle contraction by the sliding filament mechanism,thin filaments are pulled towards the

Correct AnswerverifiedShow Answer

Which of the following types of muscle tissue is capable of undergoing the stress-relaxation response when they are stretched?

Correct AnswerverifiedShow Answer

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