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.
ball-and-socket joint a synovial joint in which the rounded or spheroidal surface of one bone (the âballâ) moves within a cup-shaped depression (the âsocketâ) on another bone, allowing greater freedom of movement than any other type of joint.See illustration. Called also polyaxial or spheroidal joint.he most common type are the synovial joints, which have a complex internal structure, composed not only of ends of bones but also of ligaments, cartilage, the articular capsule, the synovial membrane, and sometimes bursae.