Question 1

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) None of the above
G) A) and D)

Question 2

A muscle fiber is made up of many

Accepted Answer

A)  muscle cells.
B)  T tubules.
C)  myofibrils.
D)  fascicles.
E)  bursa.F) A) and D)
G) A) and B)

Question 3

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) C) and D)
G) B) and E)

Question 4

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) All of the above
G) A) and B)

Question 5

What is the name of the small gap that separates the axon terminal of a nerve from the sarcolemma?

Accepted Answer

A)  T tubule
B)  sliding filament
C)  synaptic cleft
D)  synaptic vesicle
E)  sarcoplasmic reticulumF) A) and C)
G) A) and B)

Question 6

When the nerve signal reaches the axon terminal what happens next?

Accepted Answer

A)  The muscle contracts.
B)  The synaptic vesicles release neurotransmitter.
C)  An electrical signal is formed that jumps the synaptic cleft.
D)  H+ is pumped into the synaptic cleft.
E)  Myosin is released from the axon terminal.F) C) and D)
G) A) and E)

Question 7

Which way does the adductor longus move the thigh?

Accepted Answer

A)  away from the midline
B)  toward the midline
C)  in a circle
D)  in a cone
E)  towards the backF) All of the above
G) A) and B)

Question 8

Which of the following does not attach to the sternocleidomastoid muscle?

Accepted Answer

A)  rib
B)  clavicle
C)  sternum
D)  mastoid process
E)  skullF) B) and E)
G) A) and C)

Question 9

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) B) and C)
G) A) and E)

Question 10

Fibromyalgia is a temporary condition of achy muscles,usually due to overuse.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following does not occur when a muscle fatigues?

Accepted Answer

A)  Its energy reserves are depleted.
B)  Stimulation continues.
C)  Tetanus is achieved.
D)  Acetylcholine is crossing the synaptic cleft.
E)  The muscle relaxes.F) A) and C)
G) B) and C)

Question 12

What muscle works in a pair with the biceps brachii?

Accepted Answer

A)  the triceps brachii
B)  the trapezius
C)  the masseter
D)  the pectoralis major
E)  the sartoriusF) None of the above
G) B) and E)

Question 13

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

Accepted Answer

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

Question 14

Which of the following is not an energy source for muscle contraction?

Accepted Answer

A)  glycogen
B)  triglycerides
C)  glucose
D)  fatty acids
E)  starchF) D) and E)
G) A) and B)

Question 15

What happens to the actin and myosin filaments when a muscle contracts?

Accepted Answer

A)  both of them shorten
B)  both of them lengthen
C)  both stay the same length
D)  actin shortens while myosin lengthens
E)  myosin shortens while actin lengthensF) D) and E)
G) A) and E)

Question 16

One sarcomere

Accepted Answer

A)  extends from Z line to Z line.
B)  is composed of many myofibrils.
C)  contains only actin fibers.
D)  is composed of many muscle fibers.
E)  surrounds each muscle in the body.F) D) and E)
G) None of the above

Question 17

What is the difference between a tic and a spasm?

Accepted Answer

A)  A tic is a spasm that can be controlled voluntarily.
B)  A tic is a strong,and very painful spasm,especially of the leg and foot.
C)  A tic is caused by stretching or tearing of a muscle,while a spasm is just an involuntary contraction.
D)  A tic is caused by the inflammation of a tendon,while a spasm is just an involuntary contraction.
E)  A tic refers to achy muscles,usually due to over exercise,while a spasm is just an involuntary contraction.F) None of the above
G) C) and D)

Question 18

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) D) and E)
G) B) and C)

Question 19

Contraction of a muscle requires all the motor units to be undergoing tetanic contraction.

Accepted Answer

A) True 
 B)False

Question 20

What structure attaches a muscle to a bone?

Accepted Answer

A)  ligaments
B)  tendons
C)  bursae
D)  sarcolemma
E)  sarcoplasmF) A) and B)
G) A) and C)

Exam 13: Muscular System

What is the difference between a tic and a spasm?

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Which way does the adductor longus move the thigh?

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

Correct AnswerverifiedShow Answer

When the nerve signal reaches the axon terminal what happens next?

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

Which of the following is not an energy source for muscle contraction?

Correct AnswerverifiedShow Answer

What is the name of the small gap that separates the axon terminal of a nerve from the sarcolemma?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What structure attaches a muscle to a bone?

Correct AnswerverifiedShow Answer

One sarcomere

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What muscle works in a pair with the biceps brachii?

Correct AnswerverifiedShow Answer

A muscle fiber is made up of many

Correct AnswerverifiedShow Answer

Which of the following does not attach to the sternocleidomastoid muscle?

Correct AnswerverifiedShow Answer

Contraction of a muscle requires all the motor units to be undergoing tetanic contraction.

Correct AnswerverifiedShow Answer

Fibromyalgia is a temporary condition of achy muscles,usually due to overuse.

Correct AnswerverifiedShow Answer

Which of the following does not occur when a muscle fatigues?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is found within the intercalated disks of cardiac muscle?

Correct AnswerverifiedShow Answer

What happens to the actin and myosin filaments when a muscle contracts?

Correct AnswerverifiedShow Answer

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