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Vertebrea- each of the series of small bones forming the backbone, having several projections for articulation and muscle attachment, and a hole through which the spinal cord passes this is a movable bone


 * metacarpophalangeal joint – the joint at the base of the finger.
 * proximal interphalangeal joint – the joint in the middle of the finger.
 * distal interphalangeal joint – the joint closest to the fingertip.