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.
A RealAge answered. An abrasion (scrape) is a shallow scrape on the skin surface and most commonly found on the hands, elbows, or knees. The wound is shallow and doesn't go far beneath the surface. Because an abrasion exposes millions of nerve endings, it can be very painful. A large abrasion can look and act like a burn.