This is a joint. Joints are a point of articulation between two or more bones, this connection allows motion.
In a joint, bones muscles, tendons and ligaments combine to allow it to carry out work (move)
Parts of a joint:
Bones- rigid tissues that make up the skeleton
Muscle- tissue that contracts and relaxes
Ligaments- connect the bones together in a joint (hold them in position), it is a tough but elastic tissue.
Tendons- connect muscle to bone or muscle to muscle and are a tough but inelastic tissue.
In a synovial joint:
Cartilage- tough tissue that stops the bones grinding together, reducing wear in the joint (like a shock absorber)
Synovial fluid- this is an oily fluid which reduces friction within the joint, allowing it to move more freely.