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Full Text. The hyoid bone is a horseshoe shaped bone found in the neck. Located anteriorly between the mandible and the thyroid cartilage, the hyoid bone protects the esophagus and also facilitates the wide range of muscle activity required for speaking and swallowing. It is visible upon extension of the neck.
Cricoid Cartilage Definition and Structure. Cricoid cartilage is an unpaired hyaline cartilage located in the larynx at C6 vertebral level. It rests inferior to the thyroid cartilage.It has a characteristic signet ring shape where the anterior part has an arch and the posterior part is a broad lamina. Epiglottis: This is attached to the thyroid gland. 2  It is made up of fibrocartilage with a shape like that of a spoon. 3  Epiglottis and cricoid cartilage are the laryngeal cartilages that are not paired. 4  Thyroid: This is commonly known as the Adamâs apple.