Cockroach Mandible - Side View

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Only the side of the mandible is visible in this view as it is covered by the labrum. The cockroach mandible is well sclerotized (hardened), with the heaviest sclerotization occurring at the teeth. The molar area of the mandible is a grinding surface. This type of mandibular structure enables cockroaches to break down a wide variety of materials such as human food scraps, leather, paper, glue and, in some species, wood.