Which of the following structures take part in the constitution of the temporomandibular joint (颞下颌关节)? （ ）
A.head of mandible (下颌头) B.mandibular fossa (下颌窝) of the temporal bone C.mastoid process (乳突) D.articular tubercle (关节结节) of the temporal bone E.petrous part of the temporal bone (颞骨岩部)正确答案ABD
