What type of joint connects the vertebrae in the spine?

The connection between the vertebrae in the spine is classified as a synovial joint, specifically a type called a "facet joint." These joints are crucial for allowing a range of movement while also providing stability to the spine as a whole. Synovial joints are characterized by a fluid-filled joint cavity, which facilitates smooth movement between the articulating bones. This design is essential for the vertebrae, as it allows for rotational and bending movements of the spine, which are vital for everyday activities and mobility.

The synovial joint is composed of cartilage, synovial fluid, and a joint capsule, all of which work together to absorb shock and reduce friction during movement. The flexibility and range of motion provided by these joints contribute significantly to the overall function of the spine, enabling movements like twisting and bending while maintaining structural integrity.