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 should not be confused with slightly movable joints. The synovial type have a large range of mobility, while slightly movable ones can only move a limited amount. An example of this type is the small joints that are located in the middle of vertebrae in the spinal column.