Basic Biochemical Concepts (Msq Drill 201)

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  • 1/29 Questions

    In which lever do you have the fulcrum located in between the muscle contraction and the resistance?

    • 1st class lever
    • 2nd class lever
    • 3rd class lever
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Basic Biochemical Concepts (Msq Drill 201) - Quiz
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  • 2. 

    In a third class lever, is the effort and load on one side of the fulcrum or they are on either side of the fulcrum?

    • Effort and load are on one side of the fulcrum in a 3rd class lever

    • Effort and load are on either side of the fulcrum in a 3rd class lever

    Correct Answer
    A. Effort and load are on one side of the fulcrum in a 3rd class lever
  • 3. 

    Are joints typically fulcrums?

    • Yes

    • No

    Correct Answer
    A. Yes
  • 4. 
    Does this lever favor speed or force? - ProProfs

    Does this lever favor speed or force?

    • Speed favored over force

    • Force favored over speed

    Correct Answer
    A. Speed favored over force
  • 5. 

    So, if the fulcrum is moved closer to the load or resistance in a 1st class lever then force has advantage over speed?

    • Yes

    • No

    Correct Answer
    A. Yes
  • 6. 
    Increasing the distance of the long vector by increasing the weight of the ball and thus moving the center of gravity will result in: - ProProfs

    Increasing the distance of the long vector by increasing the weight of the ball and thus moving the center of gravity will result in:

    • More muscle energy being needed

    • Less muscle energy being needed

    Correct Answer
    A. More muscle energy being needed
  • 7. 
    This is a 1st, 2nd or 3rd class lever? - ProProfs

    This is a 1st, 2nd or 3rd class lever?

    • 1st class

    • 2nd class

    • 3rd class

    Correct Answer
    A. 1st class
  • 8. 
    A screwdriver being used to pry open the lid of a paint can. Do you move the fulcrum below cler to the effort or closer to the load?A) - ProProfs

    A screwdriver being used to pry open the lid of a paint can. Do you move the fulcrum below cler to the effort or closer to the load?A)

    • Closer to the effort

    • Closer to the load

    Correct Answer
    A. Closer to the load
  • 9. 

    Which of the following accurately describes a 2nd class lever?

    • The resistance or load is between the fulcrum and muscle contraction

    • The muscle contraction is between the resistance and the fulcrum

    • The fulcrum is between the muscle contraction and the resistance

    Correct Answer
    A. The resistance or load is between the fulcrum and muscle contraction
  • 10. 
    What is this lever? - ProProfs

    What is this lever?

    • 1st class

    • 2nd class

    • 3rd class

    Correct Answer
    A. 2nd class
  • 11. 
    This is a first class lever in which the fulcrum has been moved closer to the muscle contraction. This results in: - ProProfs

    This is a first class lever in which the fulcrum has been moved closer to the muscle contraction. This results in:

    • Speed advantage over force

    • Force advantage over speed

    Correct Answer
    A. Speed advantage over force
    Explanation
    Catapult: Quick release, long lever arm

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  • 12. 
    If the ball in the hand is replaced with a bigger ball that is twice the weight of the original ball, does the center of gravity shift towards or away from the original force M? - ProProfs

    If the ball in the hand is replaced with a bigger ball that is twice the weight of the original ball, does the center of gravity shift towards or away from the original force M?

    • Towards force M

    • Further away from force M

    Correct Answer
    A. Further away from force M
    Explanation
    Because the center of gravity shifts away from the original force M, the new distance must be added to the original vector.

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  • 13. 
    Name the lever: - ProProfs

    Name the lever:

    • 1st class lever

    • 2nd class lever

    • 3rd class lever

    Correct Answer
    A. 3rd class lever
  • 14. 

    Trying to pry open a lid of a paint can with a screwdriver illustrates a 1st class lever in which force is favored or speed is favored?

    • Force is favored

    • Speed is favored

    Correct Answer
    A. Force is favored
  • 15. 

    2nd class levers ALWAYS favor:

    • force

    • Speed

    Correct Answer
    A. force
  • 16. 

    3rd class levers mostly favor force or speed?

    • Force

    • Speed

    Correct Answer
    A. Speed
  • 17. 

    Trying to pry open a paint can with a screw driver is an example of a 1st class lever in which the fulcrum has been moved closer or farther away from the muscle contraction?

    • Closer to the muscle contraction

    • Farther from the muscle contraction

    Correct Answer
    A. Farther from the muscle contraction
  • 18. 

    An example of a class 1 lever is that of the _________ muscles offsetting the weight of the front of the head and the fulcrum being the head on the cervical vertebrae.

    • Trapezius

    • Suprapinatus

    • Paraspinal

    • Latissimus dorsi

    Correct Answer
    A. Paraspinal
  • 19. 

    If you move the fulcrum close to the muscle in a 1st class lever, does force have advantage over speed or does speed have advantage over force?

    • Force has advantage over speed

    • Speed has advantage over force

    Correct Answer
    A. Speed has advantage over force
  • 20. 

     What is the most common type of lever in the human body?

    • 1st class lever

    • 2nd class lever

    • 3rd class lever

    Correct Answer
    A. 3rd class lever
  • 21. 

    Is more force allocated to stabilizing the elbow or to flexing the elbow when the brachialis contracts at a lower degree of flexion

    • Stabilizing the elbow

    • Flexing the elbow

    Correct Answer
    A. Stabilizing the elbow
  • 22. 
    Is this a 2nd or 3rd class lever? - ProProfs

    Is this a 2nd or 3rd class lever?

    • 2nd class lever

    • 3rd class lever

    Correct Answer
    A. 3rd class lever
  • 23. 

    2nd class levers are very common in the human body. True or false?

    • True, they are very common

    • False, they are very rare

    Correct Answer
    A. False, they are very rare
  • 24. 
    This is a 2nd class lever. When comparing this to the human body, the effort is equivalent to: - ProProfs

    This is a 2nd class lever. When comparing this to the human body, the effort is equivalent to:

    • Muscle contraction

    • Resistance

    • Joint

    Correct Answer
    A. Muscle contraction
  • 25. 

    Which of the three forces that make up the muscular force is responsible for stabilizing the joint?

    • Skin

    • Flexion at the joint

    • Force running parallel to the bony anatomy

    Correct Answer
    A. Force running parallel to the bony anatomy
  • 26. 

    The most efficient joint angle to use the brachialis is at

    • 10% flexion

    • 20 degrees of flexion

    • 45 degrees of flexion

    • 75 degrees of flexion

    • 90 degrees of lexion

    Correct Answer
    A. 90 degrees of lexion
  • 27. 

    The force of the brachialis is shared between which two elements?

    • Stabilizing the joint

    • Extending and flexing the joint

    • Translating the elbow

    Correct Answer(s)
    A. Stabilizing the joint
    A. Translating the elbow
    Explanation
    i.e the tangential force and the stabilization force

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  • 28. 
    In the human being which of the following can be regarded as the load? - ProProfs

    In the human being which of the following can be regarded as the load?

    • Weight

    • Resistance

    • Through the center of gravity of a body or body part

    • Muscle contraction

    Correct Answer(s)
    A. Weight
    A. Resistance
    A. Through the center of gravity of a body or body part
  • 29. 

    At 30 degrees of flexion what are the three subcomponents of muscle forces

    • Skin

    • Flexion at the joint

    • Force running parallel to the bony anatomy

    • Action of the antagonist extensor

    Correct Answer(s)
    A. Skin
    A. Flexion at the joint
    A. Force running parallel to the bony anatomy

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 11, 2013
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 19, 2010
    Quiz Created by
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