As Skeletal Muscles Enlarge in a Weight Lifter, All of the Following

question 53

Multiple Choice

As skeletal muscles enlarge in a weight lifter, all of the following occur except

• A) myofibrils become more abundant in the muscle cells.
• B) muscle cells grow larger.
• C) muscle cells divide mitotically.
• D) myofilaments become more abundant in the muscle cells.

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Definitions:

Internal Validity

Relates to experimental design. A study has internal validity when a cause-and-effect relationship between variables is clearly demonstrable and observed changes can be attributed to a defined causal variable and not to any other possible variables.

Attrition

The loss of participants from a study.

Treatment Effect

The impact of an intervention or treatment in experimental research, measured by the difference in outcomes between treated and control groups.

Ecological Isomorphism

The extent to which an experimental condition is similar to the real-world conditions it is attempting to simulate.