Tendon is a flexible cord of strong collagen tissues that attaches muscles to bones. Tendon gets injured when the tissue fibers gets tear down. These tendons gets swells up after injury and takes lots of time to recover. The doctor will suggest that recovery of the tendons will be long and painfull because of the damage of the tendon fibers.
The Grand Canyon is made of sedimentary rock that contains fossils up to 1 billion years old. and the several upper layers of rock contain terrestrial, or land-based, fossils, such as dragonfly wing impressions and the footprints of scorpions, centipedes, and reptiles