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.
Each finger has three joints. The first joint is where the finger joins the hand. This joint is where the bones that form the palm of the hand, the metacarpals, join with the first bone of the finger, called the proximal phalanx.The second joint is the proximal interphalangeal joint, sometimes called the PIP joint for short.his joint is where the bones that form the palm of the hand, the metacarpals, join with the first bone of the finger, called the proximal phalanx. The second joint is the proximal interphalangeal joint, sometimes called the PIP joint for short.