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A U-shaped bone at the base of the mouth cavity, counted with the skull, is the:

AAtlas
BPatella
CScapula
DHyoid
Answer & Solution
Correct answer: D. Hyoid
1. It sits at the base of the buccal cavity. 2. It is a single U-shaped bone. 3. It is the hyoid. _Source: syllabus Biology, Chapter 20, Locomotion and Movement._
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