Answer :
Final answer:
Ligaments are structures that connect bones and reinforce synovial joints, categorized as extrinsic, intrinsic, or intracapsular based on their location. Synchondroses and symphyses are cartilaginous joints, connected by hyaline or fibrocartilage respectively.
Explanation:
The structures that connect bones together and reinforce most synovial joints are called ligaments. These structures are crucial for maintaining the stability of the joint, resisting excessive or abnormal movements. Ligaments are categorized as extrinsic if they are located outside of the articular capsule, intrinsic if they are fused to the wall of the articular capsule, or intracapsular if they are located inside the articular capsule.
Synchondroses and symphyses, on the other hand, are cartilaginous joints, not synovial joints. These joints are either connected by hyaline cartilage, as in the case of synchondroses, or by fibrocartilage, as in symphyses. They allow for different amounts of movement; for example, synchondroses are typically immovable while symphyses only allow for limited movement.
