Muscle Cells That Are Not Exercised Will Atrophy, or Shrink

question 43

Multiple Choice

Muscle cells that are not exercised will atrophy, or shrink in size. Lou Gehrig's disease affects nervous tissue but also causes muscle atrophy. What type of nerve cell must be affected to cause this muscle-wasting condition?

• A) interneurons
• B) sensory neurons
• C) neuroglial cells
• D) motor neurons

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Definitions:

Dependent Variable

In an experimental study, it is the variable being tested and measured, influenced by the independent variable.

Heart Rate

The number of heartbeats per unit of time, usually measured in beats per minute (bpm).

Case Control Studies

Research design that compares individuals with a specific condition or disease (cases) to individuals without the condition (controls), to identify potential causes or risk factors.

Experimental Designs

Refers to a systematic method of conducting research where variables are manipulated and controlled to determine their effect on certain outcomes.