Aim: How is the human skeletal system organized?

What are the functions of the skeletal system? provide shape & support aid in movement produce red blood cells protect vital organs Skull – brain Ribs – heart and lungs Vertebrae – spinal cord 5. Store minerals (calcium & phosphorus)

What are the three parts of bone? MEMBRANE - repairs injuries, attaches to muscles 2. BONY LAYER – bone cells. Minerals help keep them hard MARROW – soft tissue that produces blood cells (Red Marrow) - store fats (yellow marrow). How are bones held together? - by CONNECTIVE TISSUE

What are the types of connective tissue? CARTILAGE – soft tissue between bones, acts as a cushion - strong, flexible, & very slick Ex: disks between vertebra LIGAMENT – tissue which connects 1 bone to another. Ex: collateral ligaments in knee TENDONS – tissue which connects a muscle to a bone Ex: Achille’s tendon in ankle

What are the different types of joints? What is a joint? The area where 2 bones meet. What are the different types of joints? 1. FUSED/FIXED/IMMOVABLE – no movements, bones are fused together Ex: cranium, pelvis

What are the Different types of Joints? 2. BALL AND SOCKET Allows movement in all directions Ex. Hip, Shoulder.

What are the Different types of Joints? 3. HINGE Joint – one way movement back and forth Ex: knee, elbow

What are the Different types of Joints? 4. PIVOT - turn side to side ( rotation around a point). Ex: neck,

What are the Different types of Joints? 5. GLIDING – little movement, bones slide over, around each other Ex: vertebrae, ankles, wrist

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Fun Facts The adult body is composed of ______ bones. 206 The longest bone in the body is the ______. Femur Before you are born your body's skeleton is mostly made of _________. Cartilage

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