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Razi

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Joints

Joints are places where two or more bones meet in your body, and they help you move easily, like bending your arms and legs. Joints work as connectors, letting bones move in different ways, such as straightening, bending, or turning. They are really important for dancing, running, and doing almost any movement. Inside joints, there are also special parts to help bones move smoothly and stop them from rubbing together. Without joints, your bones would be stiff, and you wouldn't be able to move much at all.​

  1. Joints are places where two or more bones meet in the body.

  2. They help the body move by allowing bones to bend, twist, and turn easily.

  3. Joints act like connectors that make it possible to do activities like walking, dancing, and playing.

  4. There are different types of joints: some move a lot (like hips and shoulders), and some barely move (like in the skull).

  5. Joints have special parts like cartilage and fluid that help bones slide smoothly without hurting each other.

  6. Ligaments hold bones together at joints and keep them stable while moving.

  7. Some joints are hinge joints (like knees and elbows) that only move back and forth.

  8. Ball-and-socket joints (like hips and shoulders) allow movement in many directions.

  9. Joints protect bones from breaking by absorbing shocks when you move.

  10. Healthy joints help you stay active and do many daily activities without pain or stiffness.

main 3

l types of joints in the human body:

  1. Fibrous Joints – These joints do not move much or at all. The bones are connected by strong fibrous tissue. Example: skull sutures.

  2. Cartilaginous Joints – Bones are connected by cartilage, allowing only slight movement. Example: joints between spine bones.

  3. Synovial Joints – These are the most common and freely movable joints with a fluid-filled joint cavity. They allow a wide range of movements.

types

  1. Ball-and-Socket Joints: Allow movement in all directions, like shoulders and hips.

  2. Hinge Joints: Move like a door hinge, back and forth, like knees and elbows.

  3. Pivot Joints: Allow rotation around one axis, like the neck.

  4. Saddle Joints: Allow movement back and forth and side to side but no rotation, like the thumb joint.

  5. Condyloid Joints: Allow some movement without rotation, like finger joints.

  6. Gliding (Plane) Joints: Flat bones that slide over each other, like the wrist.

    functions

  7. Joints connect bones together in the body, making the skeleton flexible.

  8. They allow different kinds of movement like bending, twisting, and turning.

  9. Joints help with movements needed for walking, running, grabbing, and dancing.

  10. They protect bones by absorbing shocks and reducing friction between them.

  11. Joints hold the skeleton stable while still letting the body move freely.

  12. Different types of joints allow different movements — some move a lot, others very little.

  13. Ball-and-socket joints allow movement in many directions (shoulders and hips).

  14. Hinge joints allow movement in one direction, like a door (elbows and knees).

  15. Pivot joints allow twisting or rotating movements, like turning your head side to side.

  16. Joints keep the bones in place with ligaments and reduce wear with cushioning cartilage and lubricating fluid.

These functions together help the body stay strong, flexible, and able to perform daily activities without pain or damage.

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