Final answer:
A symphysis is the structural joint found in intervertebral joints, the pubic symphysis, and the manubriosternal joint, characterized by bones connected by fibrocartilage.
Step-by-step explanation:
The type of structural joint that can be found in intervertebral joints, the pubic symphysis, and the connection of the sternum and the manubrium is called a symphysis. A symphysis is a type of cartilaginous joint where bones are connected together by fibrocartilage. The gap between the bones in a symphysis can be either narrow, like in the pubic symphysis and the manubriosternal joint, or wide, such as in the intervertebral discs of the spine. The pubic symphysis joins the pubic portions of the right and left hip bones across a narrow gap, while the manubriosternal joint unites the manubrium and body portions of the sternum. The intervertebral joints are classified as wide symphyses, where each vertebra is united to the next by an intervertebral disc.