Bones and joints work together to provide structure, support, and movement to the body. Bones: 1. Provide framework and shape 2. Protect internal organs 3. Produce blood cells 4. Store minerals like calcium and phosphorus Joints: 1. Allow movement and flexibility 2. Connect bones 3. Absorb shock Types of Joints: 1. *Hinge joints* (elbow, knee) 2. *Ball-and-socket joints* (shoulder, hip) 3. *Pivot joints* (neck) 4. *Gliding joints* (wrist) 5. *Fibrous joints* (skull bones) Common Issues: 1. Osteoarthritis (wear and tear) 2. Fractures (broken bones) 3. Sprains (ligament injuries) 4. Tendonitis (inflammation) Maintaining Healthy Bones and Joints: 1. Exercise regularly 2. Balanced diet with calcium and vitamin D 3. Maintain healthy weight 4. Proper posture