Sublingual space

The sublingual space is one of the suprahyoid deep spaces of the head and neck.

Gross anatomy

It is like an inverted V with its apex pointing anteriorly and is located between:

  • tongue musculature superiorly
  • and the anterior one-third of the mylohyoid muscle inferolaterally which separates it from submandibular space 

Posteriorly, the sublingual space is not encapsulated by any fascial layer and it freely communicates along the posterior free border of the mylohyoid muscle with the submandibular and parapharyngeal spaces

Anteriorly, the two sublingual spaces are communicating via a small isthmus just below the frenulum


Related pathology

Anatomy: Head and neck
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Article information

rID: 34572
System: Head & Neck
Section: Anatomy
Tag: refs
Synonyms or Alternate Spellings:

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Cases and figures

  • Sublingual space: annotated MRI
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