Locomotor System

A tendon is a cord of strong, flexible tissue, similar to a rope. Tendons link your muscles to your bones. They let you bones moveas your muscles tighten and relax. They also help to prevent injuries absorbing the impact of movements like run, jump, and that kind of movements. Our body has thousands of tendons. The Aquiles tendon is the longest of our body. Injuries: -Tendons are highly resistant to tearing, but they aren't flexible. They can be easily injured when strainedand may take a long time to heal. Examples of injuries: Tendonitis (Inflammation), Biceps tendon injuries, Strains (tear, pull or twist a tendon).

 The bones are the organs that form your skeleton. The skeleton keeps rigid your body structure. They can't move, but the muscles produce that movement pulling them. An adult has got 206 bones, not counting the small sesamoid bones or the sutural or supernumerary bones that some people have in the skull. There are four types of bones depending on their size: -Flat bones -Short bones -Irregular bones -Long bones

 The muscles are the efector organs in the relation function. There are more than 650 muscles in the human body. They can shorten their sizes to drag the bones with them. For example:   In this image the braquial biceps is pushing humerus up and producing movement. The muscles are divided on tissues; there are three types of tissues: -striated muscle tissue, it is addered to the bones, we can control it. -cardiac muscle tissue, it is in the heart, we can't control it. -smooth muscle tissue, it is in the organs, we can't control it.

 The locomotor system consists in five fases that produce movement: -first the stimulus -second the reception of the stimulus -then the answer of the nervous system -next the nerves send the answer -and at the end the muscles, bones and joints do it The locomotor system is made of muscles and bones and there are diferent types of each other: