## Synovial joints

The joints (add subtitles to the video by clicking on the square button on the lower right side) https://www.youtube.com/watch?v=DLxYDoN634c

The synovial joints are the joints in the body that can easily move over a large range. The elbow, the shoulder and the neck joint are all examples of a syniovial joint. Because of a special fluid in the joint, called the synovial fluid, theese joint move smootly. The fluid act as a lubricant and is formed and secreted (uitgescheiden) by the synovial membrane. Strong bands of connective tissue hold the bones together. These bands are called ligaments.

There are several forms of synovial joint as described in the video but for the purpose of this class we'll look at three different types:

- Hinge joint: these joints allow movement in one direction. Your knee and elbow are examples.
- Bal and socket joint: these joints are formed by a bowl-shaped bone in which a ball-shaped bone locks. These joint allow for a lot of movement and are founbd mostly in the shoulders and the hip.
- Pivot joint: this joint is formed by two bones roling along each other such as the ulna and the radius and the vertebra in your neck and the skull.

Four different types of synovial joints. There are 6 different types of synovial joints in total.