Abnormal body tension

Simply put, it is the force produced by muscle cells pulling each other. Tension in the state of muscle relaxation and relaxation is called muscle tone. Muscle tension is the basis for maintaining various postures and normal movements of the body, and it takes many forms. For example, when a person is resting at rest, the tension of the muscles of the body is called resting muscle tension. When the body is standing, although there is no significant contraction of the muscles, the muscles at the front and back of the body also maintain a certain tension to maintain the standing posture and body stability. The tension of muscles during exercise is called exercise muscle tension, which is an important factor to ensure continuous and smooth muscle movements (no tremors, convulsions, and spasms). The generation and maintenance of muscle tone is a complex reflex activity, and its reflex arc is called "r- 袢", which includes the afferent part of r- ((receptors of muscle tone reflex are nerve muscle spindle and nerve shuttle) and r- The efferent part of the tadpole (a motor neuron in the anterior horn cells of the spinal cord and brainstem motor nucleus, innervating the spindle muscle, and r motor neuron emitting Ar fibers to reach and innervating the inner spindle muscle) Lesions in any part of its reflex arc can cause changes in muscle tone.

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