Question 1

What is found within the intercalated disks of cardiac muscle?

Accepted Answer

A)   sarcoplasmic reticulum
B)   gap junctions
C)   dense connective tissue
D)   bone
E)   myoglobinF) A) and E)
G) C) and E)

Question 2

Of the three pathways for obtaining ATP for muscle contraction,which one requires oxygen?

Accepted Answer

A)   only the creatine phosphate pathway
B)   only fermentation
C)   only respiration
D)   fermentation and respiration
E)   the creatine phosphate pathway and fermentationF) A) and B)
G) C) and D)

Question 3

Several of the structures in the muscle cell are given special names.For example,the cytoplasm of a muscle fiber is called the sarcoplasm.Which of the following is truly a unique structure to muscle cells (not just a renamed one) ?

Accepted Answer

A)   cytoplasm
B)   nucleus
C)   endoplasmic reticulum
D)   transverse (T)  system
E)   plasma membraneF) B) and C)
G) A) and D)

Question 4

When a muscle contracts,the H band almost disappears.

Accepted Answer

A) True 
 B)False

Question 5

What is the biggest muscle (in terms of mass) in the body?

Accepted Answer

A)   gluteus maximus
B)   sartorius
C)   stapedius
D)   quadriceps femoris
E)   latissimus dorsiF) C) and D)
G) C) and E)

Question 6

Which of the following is not a phase of a single muscle twitch?

Accepted Answer

A)   stimulation period
B)   latent period
C)   contraction period
D)   relaxation period
E)   None of these are phases of a muscle twitch.F) B) and E)
G) None of the above

Question 7

What is the name of a sudden and involuntary muscular contraction,often accompanied by pain?

Accepted Answer

A)   bursitis
B)   sprain
C)   strain
D)   tic
E)   spasmF) D) and E)
G) B) and D)

Question 8

Which of the following is not a term that refers to how muscles work?

Accepted Answer

A)   prime mover
B)   synergists
C)   antagonist
D)   synergism
E)   originF) D) and E)
G) B) and D)

Question 9

Of the three types of muscle tissue,which is voluntary?

Accepted Answer

A)   smooth muscle
B)   cardiac muscle
C)   skeletal muscle
D)   both smooth and skeletal
E)   both cardiac and skeletal Skeletal muscle is voluntary.F) All of the above
G) D) and E)

Question 10

What is the deltoid muscle shaped like?

Accepted Answer

A)   a long thin line
B)   a square
C)   a triangle
D)   a circle
E)   a trapezoidF) A) and D)
G) A) and C)

Question 11

Explain the structural differences between the thick and thin myofilaments.

Accepted Answer

A thick filament is composed of several ...

Question 12

What information does the word rectus give you about a muscle?

Accepted Answer

A)   the size of the muscle fibers
B)   the attachment of the muscle fibers
C)   the action of the muscle fibers
D)   the shape of the muscle fibers
E)   the direction of muscle fibersF) A) and D)
G) None of the above

Question 13

Why are slow-twitch muscles dark?

Accepted Answer

A)   They have many more myofibrils per motor unit than fast-twitch fibers.
B)   They are designed for strength and explosions of energy.
C)   They need less blood than fast-twitch fibers.
D)   They contain myoglobin.
E)   They have fewer mitochondria.F) A) and B)
G) B) and E)

Question 14

What is the name of the muscle that is responsible for blinking and winking?

Accepted Answer

A)   latissimus dorsi
B)   trapezius
C)   pectoralis major
D)   orbicularis oculi
E)   extensor digitorumF) A) and E)
G) B) and D)

Question 15

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

Accepted Answer

A)   myalgia
B)   muscular dystrophy
C)   myasthenia gravis
D)   tendinitis
E)   bursitisF) A) and D)
G) A) and C)

Question 16

Which of the following is not a source of ATP for muscle contraction?

Accepted Answer

A)   ATP in the blood
B)   ATP produced in the cell
C)   the creatine phosphate pathway
D)   fermentation
E)   aerobic respirationF) B) and C)
G) A) and B)

Question 17

Of the three types of muscle tissue,which has multinucleated fibers?

Accepted Answer

A)   smooth muscle
B)   cardiac muscle
C)   skeletal muscle
D)   both smooth and skeletal muscles
E)   both cardiac and smooth musclesF) A) and E)
G) A) and D)

Question 18

What happens when the arrector pili muscles contract?

Accepted Answer

A)   Your head nods "yes."
B)   Your leg kicks out.
C)   The hairs on your skin stand on end.
D)   The blood from your skin is rerouted to your core.
E)   You tap your finger.F) A) and C)
G) B) and D)

Question 19

Which of the following does not occur when you are very,very cold?

Accepted Answer

A)   More blood flows to the surface of the body.
B)   Smooth muscle contracts inside the blood vessels supplying the skin.
C)   The arrector pili muscles contract.
D)   Shivering occurs.
E)   You get goose bumps.F) A) and D)
G) B) and E)

Question 20

Of the three types of muscle tissue,which is not striated?

Accepted Answer

A)   smooth muscle
B)   cardiac muscle
C)   skeletal muscle
D)   skeletal and smooth lack striations
E)   cardiac and smooth lack striationsF) D) and E)
G) A) and E)

Exam 13: Muscular System

What is the name of a sudden and involuntary muscular contraction,often accompanied by pain?

Correct AnswerverifiedShow Answer

Which of the following is not a phase of a single muscle twitch?

Correct AnswerverifiedShow Answer

Of the three types of muscle tissue,which has multinucleated fibers?

Correct AnswerverifiedShow Answer

Which of the following is not a term that refers to how muscles work?

Correct AnswerverifiedShow Answer

Of the three types of muscle tissue,which is not striated?

Correct AnswerverifiedShow Answer

What happens when the arrector pili muscles contract?

Correct AnswerverifiedShow Answer

Explain the structural differences between the thick and thin myofilaments.

Correct AnswerverifiedA thick filament is composed of several ...View AnswerShow Answer

What is the biggest muscle (in terms of mass) in the body?

Correct AnswerverifiedShow Answer

What is the name of the muscle that is responsible for blinking and winking?

Correct AnswerverifiedShow Answer

When a muscle contracts,the H band almost disappears.

Correct AnswerverifiedShow Answer

Of the three types of muscle tissue,which is voluntary?

Correct AnswerverifiedShow Answer

What is the deltoid muscle shaped like?

Correct AnswerverifiedShow Answer

Several of the structures in the muscle cell are given special names.For example,the cytoplasm of a muscle fiber is called the sarcoplasm.Which of the following is truly a unique structure to muscle cells (not just a renamed one) ?

Correct AnswerverifiedShow Answer

Why are slow-twitch muscles dark?

Correct AnswerverifiedShow Answer

Which of the following does not occur when you are very,very cold?

Correct AnswerverifiedShow Answer

Of the three pathways for obtaining ATP for muscle contraction,which one requires oxygen?

Correct AnswerverifiedShow Answer

What information does the word rectus give you about a muscle?

Correct AnswerverifiedShow Answer

Which of the following is not a source of ATP for muscle contraction?

Correct AnswerverifiedShow Answer

Which disease is an autoimmune disease characterized by weakness that especially affects the muscles of the eyelids,face,neck,and extremities?

Correct AnswerverifiedShow Answer

What is found within the intercalated disks of cardiac muscle?

Correct AnswerverifiedShow Answer

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A thick filament is composed of several ...
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