The posterior or terminal section of the hyoid bone (a bone in the neck region of vertebrates).
From apo- (at the end of, away from) + hyoid (relating to the u-shaped neck bone). In anatomy, apo- often refers to a terminal or posterior extension.
The hyoid bone is unique—it's the only bone in your body that doesn't connect to any other bone, just suspended by muscles, and the apohyal is its back end doing important work in swallowing.
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