• 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