With the Type of Lever System Exemplified by Flexion of the Elbow

question 197

Multiple Choice

With the type of lever system exemplified by flexion of the elbow joint, when an object is held in the hand, the

• A)power arm of the lever is the distance between the elbow joint and the insertion of the biceps muscle
• B)load arm of the lever is the distance between the elbow joint and the hand
• C)velocity and distance moved by the hand is amplified at the expense of the biceps muscle having to exert considerably greater force than the actual load that is moved
• D)answers a, b, and c are correct
• E)answers a and b are the only correct answers

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Definitions:

Punishment

The imposition of a penalty as retribution for an offense or undesirable behavior.

Extinction

In behavioral psychology, refers to the gradual weakening and disappearance of a conditioned response when it is no longer reinforced.

Performance Feedback

Information given to individuals or groups about the quality or effectiveness of their job performance, intended to facilitate improvement.

Verbal Representation

The expression or communication of ideas and thoughts through spoken words.