Corpus: Submandibular triangle
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Synonym: mandibular triangle
English:
Definition[Bearbeiten]
The trigonum submandibulare is a roughly triangular anatomical area in the anterior region of the neck (anterior cervical region).
Anatomy[Bearbeiten]
The trigonum submandibulare is bordered by the following anatomical structures:
- cranial - inferior border of the lower jaw (mandible)
- ventral - digastric muscle (venter anterior)
- dorsal - digastric muscle (venter posterior) and stylohyoid muscle
The hyoid bone (os hyoideum) lies caudal to the submandibular trigonum.
Contained structures[Bearbeiten]
The structures located in the trigonum submandibulare can be roughly divided into three layers:
Superficial layer[Bearbeiten]
- Platysma
- Facial vein
- Ramus marginalis mandibulae of the facial nerve
Middle layer[Bearbeiten]
- Glandula submandibularis
Deep layer[Bearbeiten]
- Facial artery
- Mylohyoid nerve
- Submandibular ganglion
- Submandibular duct
- Lingual artery
- Hypoglossal nerve (nerve XII)
- Musculus mylohyoideus
- Musculus hyoglossus
The cleft space in this region is called the submandibular space.