Human locomotion involves the movement of bones, cartilage, muscles, tendons, and ligaments to allow humans to move from place to place. The skeletal system contains bones of different shapes and sizes that provide support, protection, and leverage for movement. Cartilage gives joints flexibility and cushioning, and is found at the ends of ribs, nose, ears, and other areas. The muscular system contains three types of muscles - visceral, cardiac, and skeletal - which work with tendons and ligaments to control bone movement and provide structural support at joints. Common problems affecting the locomotive system include arthritis and tendonitis.

1. Human Locomotion

2. Human Locomotion Involves the movement of Bones Cartilage Muscles Tendons Ligaments It allows humans to move from place to place

3. Human Skeletal System It contains bones of many different shapes and sizes Purposes Support and protection of body structure Anchors muscle action Leverage fo body movement Produces blood cells in the marrow

4. Cartilage Connective tissues It is flexible and elastic It give support Flexibility of joints Cushions effects in joints It makes up most of the body’s skeleton By adulthood most of the cartilage is taken over by bones Found: End of ribs Nose Ears bronchi Trachea

5. Human Muscular System There are three types of muscles in the human body Visceral Smooth in appearance Involuntary in action

6. Human Muscular System Cardiac muscles Involuntary in action Striped in appearance Heart etc………………

7. Human Muscular System Skeletal Muscle Appearance Voluntary in action Striped in appearance Controlled by the central nervous system They are used to move bones in a coordinated manner Muscles usually operate in pairs Which “pull” on the bones on either side INCLUDE Extenders- which extend the limbs Flexors – return the limbs (bend the joints)

8. Tendons Made up of connective tissues They are tough, inelastic They connect the muscle to the bone

9. Ligaments Made up of tough elastic connective tissue Able to stretch slightly during joint movement Connect bones at joints such as Elbows fingers knees

10. Problems that effect the Skeletal System Arthritis Tendonitis

11. Arthritis Inflammation of the joints causing swelling an horrible pain Cam occur at a young age Usually occurs when old

12. Tendonitis Inflammation (swelling) of the tendons usually at the bone attachment Caused by physical stress and irritation to the spot Common in athletes