Sublingual space

Last revised by Roland Warner on 14 Jul 2019

The sublingual spaces are paired suprahyoid deep spaces of the head and neck located below the tongue.

Gross anatomy

The sublingual space is a part of the floor of mouth 1.

As the sublingual space is not bounded by fascia posteriorly, some authors consider the sublingual space a component of the submandibular space 2. More commonly, however, the sublingual and submandibular spaces are discussed separately 3-5.

Each sublingual space communicates with contralateral sublingual space via a small isthmus just below the frenulum.


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


Related pathology

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