Question 1

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

Question 2

When a muscle contracts,the H band almost disappears.

Accepted Answer

A) True 
 B)False

Question 3

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)  myoglobin 
A)  sarcoplasmic reticulum 
B)  gap junctions 
C)  dense connective tissue 
D)  bone 
E)  myoglobin

Question 4

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

Question 5

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

Question 6

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

Question 7

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 membrane 
A)  cytoplasm 
B)  nucleus 
C)  endoplasmic reticulum 
D)  transverse (T) system 
E)  plasma membrane

Question 8

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. 
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.

Question 9

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. 
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.

Question 10

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. 
A)  smooth muscle 
B)  cardiac muscle 
C)  skeletal muscle 
D)  both smooth and skeletal 
E)  both cardiac and skeletal Skeletal muscle is voluntary.

Question 11

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)  origin 
A)  prime mover 
B)  synergists 
C)  antagonist 
D)  synergism 
E)  origin

Question 12

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 trapezoid 
A)  a long thin line 
B)  a square 
C)  a triangle 
D)  a circle 
E)  a trapezoid

Question 13

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)  spasm 
A)  bursitis 
B)  sprain 
C)  strain 
D)  tic 
E)  spasm

Question 14

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)  bursitis 
A)  myalgia 
B)  muscular dystrophy 
C)  myasthenia gravis 
D)  tendinitis 
E)  bursitis

Question 15

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 fibers 
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 fibers

Question 16

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 digitorum 
A)  latissimus dorsi 
B)  trapezius 
C)  pectoralis major 
D)  orbicularis oculi 
E)  extensor digitorum

Question 17

Explain the structural differences between the thick and thin myofilaments.

Accepted Answer

A thick filament is composed of several

Question 18

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. 
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.

Question 19

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 dorsi 
A)  gluteus maximus 
B)  sartorius 
C)  stapedius 
D)  quadriceps femoris 
E)  latissimus dorsi

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

Exam 13: Muscular System

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

When a muscle contracts,the H band almost disappears.

What is found within the intercalated disks of cardiac muscle?

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

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

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

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)?

What happens when the arrector pili muscles contract?

Why are slow-twitch muscles dark?

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

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

What is the deltoid muscle shaped like?

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

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

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

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

Explain the structural differences between the thick and thin myofilaments.

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

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

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

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