Answer
Two synchondroses are the temporary joint between the epiphysis and diaphysis of a long bone in a child and anther is the attachment of the first rib to the sternum by a hyaline costal cartilage. 2 examples of symphyses is the pubic symphysis and the joint between the bodies of 2 vertebrae.
Work Step by Step
Synchondroses and Symphyses Page 277-278