1: Median raphe - 2: Digastric muscle (anterior belly) - 3: Mylohyoid muscle - 4: Orbicularis oris muscle - 5: Buccinator muscle - 6: Geniohyoid muscle - 7: Buccopharyngeal fascia - 8: Palatoglossus muscle in the palatoglossal arch - 9: Masseter muscle - 10: Palatine tonsil - 11: Palatopharyngeus muscle in the palatopharyngeal arch - 12: Medial pterygoid muscle - 13: Styloglossus muscle - 14: Stylopharyngeus muscle - 15: Parotid gland - 16: Inferior oblique muscle - 17: Digastric muscle (posterior belly) - 18: Multifidus muscle -19 : Splenius cervicis and longus colli muscles - 20: Trapezius muscle - 21: Nuchal ligament - 22: Spinous process - 23: Second cervical vertebra (axis) - 24: Transverse process - 25: Inferior zygapophyseal process - 26: Internal jugular vein, internal carotid artery, and glossopharyngeal, vagus, and accessory nerves - 27: Retromandibular vein and external carotid artery - 28: Mandible (ramus) - 29: Ligament (hyoid bone/digastric muscle) - 30: Mandible - 31: Mandible (body) - 32: Hyoid bone