The Articulation Between the Root of a Tooth and an Alveolus

Question

The articulation between the root of a tooth and an alveolus in the mandible is an example of a
A)synchondrosis
B)diarthrosis
C)symphysis
D)suture
E)gomphosis

Accepted Answer

The articulation between the root of a tooth and an alveolus in the mandible is an example of a gomphosis, which is a specialized type of joint where a peg-like structure fits into a socket, such as the tooth in its alveolus. The other choices do not apply to this specific joint. A synchondrosis is a type of joint where bones are joined by cartilage, such as the epiphyseal plate between the diaphysis and epiphysis of a long bone. A diarthrosis is a freely movable joint, such as the hip or shoulder. A symphysis is a type of joint where bones are joined by fibrocartilage, such as the pubic symphysis. A suture is a joint that is only found in the skull, where bones are joined by dense fibrous connective tissue.