Question 1

When myosin-actin cross-bridges form,the cross-bridges:

Accepted Answer

A)  bend,causing shortening of the sarcomere
B)  stay stationary and linear
C)  attempt to bend,attempting to shorten the sarcomere
D)  lengthen,causing a lengthening of the sarcomereE) B) and D)
F) C) and D)

Question 2

When a person is doing a push-up,during the downward movement the triceps brachii is doing what type of contraction at the elbow joint?

Accepted Answer

A)  eccentric
B)  isometric
C)  stabilization
D)  concentricE) All of the above
F) B) and C)

Question 3

When a person is doing a push-up,during the upward movement the triceps brachii is doing what type of contraction at the elbow joint?

Accepted Answer

A)  eccentric
B)  isometric
C)  stabilization
D)  concentricE) A) and B)
F) B) and C)

Question 4

If the force of a muscle's contraction is greater than the resistance force,what type of contraction occurs?

Accepted Answer

A)  isometric
B)  stabilization
C)  eccentric
D)  concentricE) B) and C)
F) None of the above

Question 5

A concentric contraction is characterized by the muscle:

Accepted Answer

A)  shortening
B)  lengthening
C)  staying the same length
D)  sometimes shortening and sometimes lengtheningE) A) and C)
F) B) and D)

Question 6

The weight of the forearm when the brachialis muscle contracts is what type of force?

Accepted Answer

A)  compliance
B)  resistance
C)  synergist
D)  fixationE) A) and D)
F) B) and D)

Question 7

If the force of the muscle's contraction is less than the resistance force,what type of contraction occurs?

Accepted Answer

A)  isometric
B)  stabilization
C)  eccentric
D)  concentricE) B) and C)
F) A) and C)

Question 8

When a person is doing a biceps curl,during the upward movement the biceps brachii is doing what type of contraction at the elbow joint?

Accepted Answer

A)  eccentric
B)  isometric
C)  stabilization
D)  concentricE) A) and D)
F) B) and C)

Question 9

Which of the following word origins means equal?

Accepted Answer

A)  isos
B)  uni
C)  ante
D)  conE) B) and D)
F) C) and D)

Question 10

Which of the following word origins means fastened?

Accepted Answer

A)  anti
B)  fixed
C)  tone
D)  metricE) A) and B)
F) A) and C)

Question 11

Which of the following word origins means to stretch?

Accepted Answer

A)  stabilis
B)  centrum
C)  tensio
D)  agonE) None of the above
F) All of the above

Question 12

What type of muscle contraction is usually involved with stabilization?

Accepted Answer

A)  concentric
B)  eccentric
C)  shortening
D)  isometricE) A) and D)
F) B) and C)

Question 13

An eccentric contraction is characterized by the muscle:

Accepted Answer

A)  shortening
B)  lengthening
C)  staying the same length
D)  sometimes shortening and sometimes lengtheningE) A) and D)
F) A) and C)

Question 14

When a person is doing a biceps curl,during the downward movement the biceps brachii is doing what type of contraction at the elbow joint?

Accepted Answer

A)  eccentric
B)  isometric
C)  stabilization
D)  concentricE) A) and B)
F) All of the above

Question 15

An isometric contraction is characterized by the muscle:

Accepted Answer

A)  shortening
B)  lengthening
C)  staying the same length
D)  sometimes shortening and sometimes lengtheningE) A) and B)
F) None of the above

Question 16

When a muscle contracts it:

Accepted Answer

A)  always shortens its overall length
B)  lengthens towards the attachment sites
C)  stays the same length at all times
D)  attempts to shorten toward its centerE) C) and D)
F) A) and D)

Question 17

The usual purpose of an eccentric muscle contraction force is to do which of the following?

Accepted Answer

A)  speed up the mover force
B)  slow down the mover force
C)  increase speed of body movement
D)  none of these choicesE) None of the above
F) B) and D)

Question 18

If a person is holding his or her arm in a position of 90 degrees of abduction of the arm at the shoulder joint,what type of contraction is occurring?

Accepted Answer

A)  shortening
B)  isometric
C)  concentric
D)  lengtheningE) All of the above
F) B) and C)

Question 19

If a muscle contracts and lengthens,what type of contraction occurs?

Accepted Answer

A)  stabilization
B)  eccentric
C)  concentric
D)  isometricE) A) and B)
F) A) and C)

Question 20

What is the term for a muscle that contracts and shortens?

Accepted Answer

A)  fixator
B)  antagonist
C)  stabilizer
D)  moverE) A) and C)
F) A) and B)

Exam 12: Types of Muscle Contractions

Which of the following word origins means fastened?

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An eccentric contraction is characterized by the muscle:

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If the force of a muscle's contraction is greater than the resistance force,what type of contraction occurs?

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If the force of the muscle's contraction is less than the resistance force,what type of contraction occurs?

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When a person is doing a biceps curl,during the upward movement the biceps brachii is doing what type of contraction at the elbow joint?

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The usual purpose of an eccentric muscle contraction force is to do which of the following?

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The weight of the forearm when the brachialis muscle contracts is what type of force?

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A concentric contraction is characterized by the muscle:

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Which of the following word origins means to stretch?

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When myosin-actin cross-bridges form,the cross-bridges:

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An isometric contraction is characterized by the muscle:

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When a person is doing a push-up,during the upward movement the triceps brachii is doing what type of contraction at the elbow joint?

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If a muscle contracts and lengthens,what type of contraction occurs?

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What type of muscle contraction is usually involved with stabilization?

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When a person is doing a biceps curl,during the downward movement the biceps brachii is doing what type of contraction at the elbow joint?

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When a person is doing a push-up,during the downward movement the triceps brachii is doing what type of contraction at the elbow joint?

Correct AnswerverifiedShow Answer

Which of the following word origins means equal?

Correct AnswerverifiedShow Answer

If a person is holding his or her arm in a position of 90 degrees of abduction of the arm at the shoulder joint,what type of contraction is occurring?

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When a muscle contracts it:

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What is the term for a muscle that contracts and shortens?

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