Skeletal Muscle Fibers Show a Range of Responses to Different

question 130

Multiple Choice

Skeletal muscle fibers show a range of responses to different levels of stimulation because

• A) each muscle fiber contraction is "all or none."
• B) the availability of Ca²⁺ sets an upper limit to the strength of the contraction.
• C) a new contraction can occur only after the resting condition is reached.
• D) following stimulation, the fibers stay contracted.
• E) individual twitches in quick succession in the same fiber can undergo summation.

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Definitions:

Evaluating

The process of assessing or judging the value, significance, or condition of something based on certain criteria or standards.

Manipulative

A method or approach that seeks to influence others in a skillful or sometimes deceptive manner.

Flexible

Capable of easily adapting or changing to accommodate new circumstances.

Time

A continuous, quantifiable period during which actions, processes, or conditions exist or take place.