Which term refers to the resistance of a muscle to active or passive stretch?

• A. Tone Quality
• B. Strength
• C. Muscle Tone
• D. Endurance

Answer: (C)

Muscle tone is the continuous, passive resistance a muscle offers to being stretched, reflecting the small amount of neural activation that keeps muscles ready for movement and the elastic properties of the muscle-tendon unit. This baseline resistance stabilizes joints and supports posture, making it distinct from true strength (how much active force a muscle can generate) and endurance (how long a muscle can sustain activity). Tone quality is not used to describe this property, as it refers to characteristics outside muscle resistance. So, the term that best fits resistance to stretch is muscle tone.