You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Muscle tone is maintained by ? and explain in detail?
Ans. is 'c' i.e., Muscle spindleSensory receptors (stretch receptors) for stretch reflex are muscle spindles.Stretch reflex has two principal functions :1) To maintain muscle toneTone is a tendency of a muscle to resist being stretched.Muscle tone is not only impoant for maintaining posture but also facilitates locomotion and makes all voluntary movement smooth.2) To make muscles respond to stretch and releaseStretch reflex makes a muscle respond to stretch by contraction and to release by relaxation.both these responses, which oppose the triggering stimulus, help make voluntary movement smooth and graceful.