Question 1

________ is a powerful forearm extensor.

Accepted Answer

A)  Triceps brachii
B)  Brachioradialis
C)  Brachialis
D)  Biceps brachiiE) A) and B)
F) None of the above

Question 2

The ________ is the main chewing muscle.

Accepted Answer

A)  hyoglossus
B)  lateral pterygoid
C)  buccinator
D)  masseterE) All of the above
F) None of the above

Question 3

In emphysema,the lungs become overdistended with trapped air,which increases the effort required for breathing.Describe the muscles involved when breathing becomes a forced process,such as a patient who has emphysema.

Accepted Answer

During forced inspiration,the scalenes a...

Question 4

If a lever operates at a mechanical disadvantage,it means that the ________.

Accepted Answer

A)  effort is farther than the load from the fulcrum
B)  load is near the fulcrum and the effort is at the distal end
C)  lever system is useless
D)  load is far from the fulcrum and the effort is applied near the fulcrumE) None of the above
F) A) and D) D

Question 5

Which of the following muscles is involved in crossing one leg over the other to produce the cross-legged position?

Accepted Answer

A)  all of the hamstrings
B)  the quadriceps femoris
C)  the sartorius
D)  the gastrocnemiusE) C) and D)
F) None of the above

Question 6

What are the levers that operate at a mechanical advantage called?

Accepted Answer

A)  speed levers
B)  dysfunctional levers
C)  power levers
D)  functional leversE) B) and D)
F) A) and D)

Question 7

Most superficial thorax muscles are extrinsic shoulder muscles.

Accepted Answer

A) True 
 B)False

Question 8

The arrangement of a muscle's fascicles determines its range of motion and power.

Accepted Answer

A) True 
 B)False

Question 9

The names of muscles often indicate the action of the muscle.What does the term levator mean?

Accepted Answer

A)  The muscle is a fixator and stabilizes a bone or joint.
B)  The muscle flexes and rotates a region.
C)  The muscle elevates.
D)  The muscle functions as a synergist.E) A) and D)
F) A) and C)

Question 10

The sternocleidomastoid muscle inserts on the ________.

Accepted Answer

A)  platysma
B)  clavicle
C)  mastoid process of the temporal bone
D)  sternumE) All of the above
F) B) and C)

Question 11

If L = load,F = fulcrum,and E = effort,what type of lever system is described as LEF?

Accepted Answer

A)  third-class lever
B)  second-class lever
C)  fourth-class lever
D)  first-class leverE) A) and C)
F) None of the above

Question 12

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

Accepted Answer

A)  a prime mover
B)  an agonist
C)  a synergist
D)  an antagonistE) A) and B)
F) None of the above C

Question 13

The ________ extends the great toe.

Accepted Answer

A)  tibialis anterior
B)  gastrocneumius
C)  fibularis (peroneous) tertius
D)  extensor hallucis longusE) A) and C)
F) A) and B)

Question 14

A young pregnant woman went to a childbirth class and the instructor informed them about strengthening the muscles of the pelvic floor.What are these muscles?

Accepted Answer

The levator ani and coccygeus ...

Question 15

In general,a muscle that crosses on the anterior side of a joint produces ________.

Accepted Answer

A)  flexion
B)  adduction
C)  extension
D)  abductionE) B) and D)
F) B) and C)

Question 16

What is a muscle that provides the major force for producing a specific movement called?

Accepted Answer

A)  an agonist (prime mover) 
B)  a fixator
C)  a synergist
D)  an antagonistE) A) and C)
F) None of the above

Question 17

The ________ tightens the neck and draws the corners of the mouth downward as in expressing horror.

Accepted Answer

A)  platysma
B)  mentalis
C)  sternocleidomastoid
D)  sternohyoidE) B) and C)
F) B) and D) A

Question 18

Damage to the ischiocavernosus muscle would have what effect?

Accepted Answer

In the male,it would be imposs...

Question 19

Muscles that help maintain upright posture are fixators.

Accepted Answer

A) True 
 B)False

Question 20

The broadest muscle of the back is the latissimus dorsi.

Accepted Answer

A) True 
 B)False

Exam 10: The Muscular System

________ is a powerful forearm extensor.

Correct AnswerverifiedShow Answer

The ________ is the main chewing muscle.

Correct AnswerverifiedShow Answer

In emphysema,the lungs become overdistended with trapped air,which increases the effort required for breathing.Describe the muscles involved when breathing becomes a forced process,such as a patient who has emphysema.

Correct AnswerverifiedDuring forced inspiration,the scalenes a...View AnswerShow Answer

If a lever operates at a mechanical disadvantage,it means that the ________.

Correct AnswerverifiedD

Which of the following muscles is involved in crossing one leg over the other to produce the cross-legged position?

Correct AnswerverifiedShow Answer

What are the levers that operate at a mechanical advantage called?

Correct AnswerverifiedShow Answer

Most superficial thorax muscles are extrinsic shoulder muscles.

Correct AnswerverifiedShow Answer

The arrangement of a muscle's fascicles determines its range of motion and power.

Correct AnswerverifiedShow Answer

The names of muscles often indicate the action of the muscle.What does the term levator mean?

Correct AnswerverifiedShow Answer

The sternocleidomastoid muscle inserts on the ________.

Correct AnswerverifiedShow Answer

If L = load,F = fulcrum,and E = effort,what type of lever system is described as LEF?

Correct AnswerverifiedShow Answer

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

Correct AnswerverifiedC

The ________ extends the great toe.

Correct AnswerverifiedShow Answer

A young pregnant woman went to a childbirth class and the instructor informed them about strengthening the muscles of the pelvic floor.What are these muscles?

Correct AnswerverifiedThe levator ani and coccygeus ...View AnswerShow Answer

In general,a muscle that crosses on the anterior side of a joint produces ________.

Correct AnswerverifiedShow Answer

What is a muscle that provides the major force for producing a specific movement called?

Correct AnswerverifiedShow Answer

The ________ tightens the neck and draws the corners of the mouth downward as in expressing horror.

Correct AnswerverifiedA

Damage to the ischiocavernosus muscle would have what effect?

Correct AnswerverifiedIn the male,it would be imposs...View AnswerShow Answer

Muscles that help maintain upright posture are fixators.

Correct AnswerverifiedShow Answer

The broadest muscle of the back is the latissimus dorsi.

Correct AnswerverifiedShow Answer

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During forced inspiration,the scalenes a...
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D

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C

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The levator ani and coccygeus ...
View Answer

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A

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In the male,it would be imposs...
View Answer

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