Question

multiple choice question

which prevents muscle cells from becoming too slack?

extensibility
elasticity
excitability
conductivity

Explanation:

Define muscle characteristics

Using the Muscle Characteristics knowledge point

• Contractility: The ability to shorten forcibly when stimulated.
• Extensibility: The ability to stretch or extend.
• Elasticity: The ability of a muscle cell to recoil and resume its resting length after being stretched.
• Excitability: The ability to receive and respond to a stimulus.
• Conductivity: The ability to propagate an electrical signal along the plasma membrane.

Identify the mechanism preventing slackness

• When a muscle is stretched and then released, it must return to its original resting length.
• Without this recoil ability, the muscle fibers would remain elongated, loose, and unable to function effectively.
• Therefore, the property that prevents muscle cells from becoming too slack by pulling them back to their resting length is elasticity.

Answer:

• Extensibility
• Elasticity (Correct answer)
• Excitability
• Conductivity