In most vertebrates, the articular bone is connected to two other lower jaw bones, the
suprangular and the
angular.[1] Developmentally, it originates from the embryonic mandibular cartilage. The most
caudal portion of the mandibular cartilage ossifies to form the articular bone, while the remainder of the mandibular cartilage either remains cartilaginous or disappears.[1]
In snakes
In
snakes, the articular, surangular, and prearticular bones have fused to form the compound bone. The mandible is suspended from the quadrate bone and articulates at this compound bone.[2]
Function
In amphibians and reptiles
In most tetrapods, the articular bone forms the lower portion of the jaw joint. The upper jaw articulates at the
quadrate bone. [3]