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.
It sometimes is referred to as a diarthroses. The term synovial refers to the tissue involved in the joint, and diarthroses refers to the movement enabled. Some examples of these joints are those found in the wrist, elbow, hip and knee. Synovial is derived from the Latin word for egg.