List the three structural categories of joints and briefly describe the criteria used for structural classification of joints.

The structural types of joints include:1)fibrous joints,2)cartilaginous joints,and 3)synovial joints.Joints can be classified structurally based on two criteria:1)the presence or absence of a space between the articulating bones,called a synovial cavity and 2)the type of connective tissue that binds the bones together.