Q: Which of the following is not a property of muscles?  

Answer:

Muscles are an essential part of the human body, contributing to almost half of the total body weight. They are responsible for body movements and various functions like posture, circulation, and respiration. Muscles have four essential properties that make them unique, which are extensibility, excitability, contractility, and elasticity.
Extensibility is the ability of muscles to stretch and lengthen without being damaged, while excitability refers to the ability of muscles to respond to stimuli such as nerve impulses. Contractility is the ability of muscles to contract or shorten, resulting in body movement, and elasticity is the ability of muscles to return to their original shape after being stretched or contracted.
Degradability is not a property of muscles. Muscles do not degrade or decompose as they age or wear out, unlike other body tissues. Instead, they undergo a process called atrophy, where they decrease in size and lose strength due to disuse or injury. This process can be reversed with regular exercise and physical therapy.
In conclusion, muscles have unique properties that make them essential for human life and well-being. Degradability is not one of these properties, as muscles do not degrade or decompose.

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