Final answer:
Myosclerosis is a disease of the muscular system characterized by abnormal hardening of muscle tissue, leading to restricted body movement.
Step-by-step explanation:
The disease of the muscular system that is described as an abnormal hardening of muscle tissue that restricts body movement is myosclerosis. Myosclerosis is a condition where the muscle tissue undergoes fibrosis, leading to the hardening and loss of flexibility. This can result in difficulty moving or performing everyday tasks. Some possible causes of myosclerosis include chronic inflammation, autoimmune disorders, or genetic factors.
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