The inner jaw or internal jaw-like structure, particularly in arthropods and crustaceans.
From endo- (within) + gnath (from Greek gnathos meaning jaw). This zoological term describes jaw structures that are internal or positioned on the inner side of an organism.
Crustaceans like crabs have endognaths that help them manipulate food internally before it reaches the main digestive system—they're like built-in food processors!
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