| 1. | The vocal tract is supplied by the hypoglossal nerve and facial nerves.
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| 2. | The Duke scientists directed their research at the hypoglossal canal in all primates.
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| 3. | Their hypoglossal canals fell within the range of those of modern Homo sapiens.
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| 4. | The size of the hypoglossal canal is not a reliable indicator of speech.
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| 5. | The size of the hypoglossal canal does not reflect vocal capabilities or language usage.
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| 6. | The canal carries the hypoglossal nerve, which controls the muscles of the tongue.
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| 7. | The hypoglossal nerve as a donor nerve can induce tongue atrophy due to denervation.
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| 8. | The tongue's movements are controlled almost solely by a nerve called the hypoglossal.
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| 9. | Optional motor donor nerves are : the masseteric nerve, accessory nerve or hypoglossal nerve.
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| 10. | A minute filament descends and joins the hypoglossal nerve as it winds around the occipital artery.
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