Best Answer: Core: white hot Mantle: red hot to white hot depending on depth (molten lava...) Crust: various shades depending on local composition
An example of a simple synovial joint, e.g. a metacarpophalangeal (finger) joint, is shown above-right. More complicated synovial joints may involve more than two bones, may include sesamoid bones e.g. the patella in the knee joint, may include bursae, and may include accessory ligaments.
Synovial joints, sometimes called diarthrosis, are the most movable type of joint in the body. Joints are formed where bones come together. In this lesson, we'll explore the six types of synovial joints and discuss their functions. Without these joints, your body couldn't move like it does today. Six Synovial Joints