<prompt> The masseter originates from the ___.Condyle of the mandibleInfratemporal crest of the sphenoid boneInferior border of the zygomatic archPyramidal process of the palatine bone  <response>: The masseter originates from the inferior border of the zygomatic arch; specifically, its superficial head and deep head originate from the anterior two thirds or posterior one third of the inferior border, respectively. Its superficial head inserts into the lateral surface of the angle of the mandible; its deep head inserts into the ramus and body of the mandible. 