Human skeletal framework of the composition, very strong, why is the skeleton is rich in calcium, phosphorus and other minerals, bone hard, and has a strong support of.
Once had hyperparathyroidism, parathyroid hormone secretion independently, although calcitonin and vitamin D can resist a part of it, but weak, and not be able to stop the powerful role of parathyroid hormone. Parathyroid hormone in the excessive, the calcium in the bones into the blood, bone calcium content decreased, osteoporosis become osteoporosis, bone to bone inflammation fiber cystic change. The strength of the bone was damaged in the minor impact of foreign forces will cause fractures, known as pathologic fracture. Skeletal system is another major symptoms of systemic pain, and started to Waist-Leg of the future development of the body, limited activities, can not be serious to get up.
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