Tears in Tiny Bone Cells Called Osteocytes Appear an Important Step to Better Bones (image) Medical College of Georgia at Augusta University Share Print E-Mail Caption The force gravity and physical activity put on our bones causes tiny tears in the membranes of the tiny cells that enable us to make or break down bone, scientists say. Pictured are Drs. Meghan E. McGee-Lawrence and Paul McNeil. Credit Phil Jones, Senior Photographer, Augusta University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.