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 are predominant in your limbs where mobility is important. Ligaments help provide their stability and muscles contract to produce movement. The most common synovial joints are listed below: 1  Ball and socket joints, like your hip and shoulder joints, are the most mobile type of joint in the human body.2  They allow you to swing your arms and legs in many different directions.igaments help provide their stability and muscles contract to produce movement. The most common synovial joints are listed below: 1  Ball and socket joints, like your hip and shoulder joints, are the most mobile type of joint in the human body.