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.inge joint a synovial joint that allows movement in only one plane, forward and backward. Examples are the elbow and the interphalangeal joints of the fingers. The jaw is primarily a hinge joint but it can also move somewhat from side to side.