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Tongue
Surjith Vattoth, MD, FRCR; H. Ric Harnsberger, MD
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TERMINOLOGY

  • Definitions

    • Oral tongue: Anterior 2/3 of tongue not including tongue base; mucosal covering of oral tongue part of oral mucosal space/surface (OMS)
      • By imaging, includes freely mobile portion of tongue that is anterior to lingual tonsil
    • Root of tongue (ROT): Undersurface of oral tongue at its junction with anterior FOM and mandible
      • By imaging, includes lingual septum, inferior portion of genioglossus muscles, and geniohyoid muscles
    • Floor of mouth (FOM): Crescent-shaped region of mucosa overlying mylohyoid and hyoglossus muscles, extending from inner aspect of lower alveolar ridge to undersurface of anterior oral tongue
      • Be aware, some authors have historically used term "floor of mouth" to refer to mylohyoid muscle sling
    • Base of tongue: Posterior 1/3 of tongue (part of oropharynx)
      • By imaging, includes lingual tonsil

IMAGING ANATOMY

  • Overview

    • Anatomy Relationships

      • Internal Contents

        Related Anatomy
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        Related Differential Diagnoses
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        References
        Tables

        Tables

        TERMINOLOGY

        • Definitions

          • Oral tongue: Anterior 2/3 of tongue not including tongue base; mucosal covering of oral tongue part of oral mucosal space/surface (OMS)
            • By imaging, includes freely mobile portion of tongue that is anterior to lingual tonsil
          • Root of tongue (ROT): Undersurface of oral tongue at its junction with anterior FOM and mandible
            • By imaging, includes lingual septum, inferior portion of genioglossus muscles, and geniohyoid muscles
          • Floor of mouth (FOM): Crescent-shaped region of mucosa overlying mylohyoid and hyoglossus muscles, extending from inner aspect of lower alveolar ridge to undersurface of anterior oral tongue
            • Be aware, some authors have historically used term "floor of mouth" to refer to mylohyoid muscle sling
          • Base of tongue: Posterior 1/3 of tongue (part of oropharynx)
            • By imaging, includes lingual tonsil

        IMAGING ANATOMY

        • Overview

          • Anatomy Relationships

            • Internal Contents