Achilles Tendon Pain Causes & Risk Factors. As a type of tendonitis, Achilles pain involves inflammation of the soft tissue surrounding muscles and bones. A tendon is a flexible band of fibrous tissue that connects muscles to bone. Tendons work by allowing the pulling movement of muscle to lift a bone in order to cause movement.
Polish coast of the Baltic Sea. Abrasion is the mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind, glacier, waves, gravity, running water or erosion. After friction, the moving particles dislodge loose and weak debris from the side of the rock.
By Mayo Clinic Staff. A corneal abrasion is a superficial scratch on the clear, protective window at the front of your eye (cornea). Your cornea can be scratched by contact with dust, dirt, sand, wood shavings, metal particles, contact lenses or even the edge of a piece of paper.