Question

Explain why synovial joints have greater flexibility than fixed and cartilaginous joint. Once more sentence for a ninth grader

Answer 1

Synovial joints are more flexible than fixed and cartilaginous joints because they have a special fluid-filled cavity that allows the bones to move smoothly against each other. This fluid, called synovial fluid, reduces friction and helps the joints bend and rotate easily. In contrast, fixed joints do not move at all, and cartilaginous joints have limited movement because the bones are connected by tough cartilage.