- Submandibular region
- Suprahyoid muscles
- Layers
- First layer
- Digastric muscle
- Second layer
- Mylohyoid muscle
- Third layer
- Geniohyoid and hyoglossus
- Fourth layer
- Genioglossus
- Relations of posterior belly of digastric
- Superficial
- Mastoid process with
- sternocleidomastoid , splenius capitis and longissimus capitis
- Stylohyoid
- Parotid gland
- Submandibular salivary gland
- Deep
- Transverse process of atlas with superior oblique and rectus capitis Lateralis
- Internal jugular vein
- Internal carotid , external carotid , lingual , facial and occipital arteries
- Upper border
- Posterior auricular artery
- Stylohyoid muscle
- Lower border
- Related to occipital artery
- RELATIONS OF MYLOHYOID
- Superficial
- Anterior belly of digastric
- Superficial part of submandibular salivary gland
- Mylohyoid nerve and vessels
- Submental branch of facial artery
- Deep
- Hyoglossus with is superficial relations
- Styloglossus
- Lingual nerve
- Submandibular ganglion
- Deep part of submandibular saliavry gland
- Genioglossus
- Relations of hyoglossus
- Superficial
- Deep
- Inferior longitudinal muscle of tongue
- Genioglossus
- Middle constrictor of pharynx
- Glossopharyngeal nerve
- Stylohyoid ligament
- Lingual artery
- Deep to posterior border of hyoglossus
- Glossopharyngeal nerve
- Stylohyoid ligament
- Lingual artery
- SUBLINGUAL GLAND
- RELATIONS
- front - meets opposite side gland
- Behind - comes in contact with deeper part fo submandibular gland
- Above - mucous membrane of mouth
- Below - mylohyoid muscle
- Lateral - sublingual fossa
- Medial - genioglossus muscle