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Larynx Part 1 - Slide 33

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Thyroid cartilage in perspective from behind. Note foramen thyroideum. This raises the question — Is the thyroid cartilage exclusively an embryonic derivative of the 4th branchial arch, or is it a derivative of the 4th and 5th arches? Is forman evidence of incomplete union of the two arches, or can the foramen be explained by the presence of the blood vessels?

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Larynx Part 1 - Slide 33

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Department of Speech and Hearing Science

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