Final answer:
The word with an element meaning 'together' is Synovial, which refers to a type of joint in the body with structures that unite parts to facilitate movement. Synovial joints have a cavity filled with synovial fluid, enclosed by an articular capsule and often supported by ligaments, enabling a wide range of motion.
Step-by-step explanation:
The word among the given options that has an element meaning 'together' is D. Synovial. The prefix 'syn-' means 'together' or 'with'.
Therefore, the synovial joint is the one that encapsulates the concept of bringing parts together, as it includes structures such as the synovial membrane and fluid that allow for joint movement and articulation. Synovial joints are characterized by their joint cavity, which contains synovial fluid and is enclosed by the articular capsule.
Synchondroses and symphyses are types of cartilaginous joints, which means that they are connected by cartilage. Synchondroses are united by hyaline cartilage while symphyses are joined by fibrocartilage. Joints like the pubic symphysis and intervertebral joints are examples of symphyses, showcasing their function of allowing limited movement while maintaining the structural integrity between bones.
In contrast, synovial joints such as the knee and shoulder joints provide a greater range of motion compared to fibrous and cartilaginous joints due to the presence of a joint cavity with synovial fluid, articular cartilage, and a supportive connective tissue capsule, which may also include ligaments for additional joint stability.