This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Structures lying deep to posterior belly of digastric are all except? \nSelect and explain. \nA. Retromandibular vein, B. Hypoglossal nerve, C. Hyoglossus muscle, D. Occipital aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Relations of Digastric triangle Superficial Deep (medial) Platysma Mastoid process & sternocleidomastoid Stykohyoid muscle Retromandibular vein & parotid gland Submandibular salivary gland Angle of mandible with medial pterygoid For anterior belly Mylohyoid For posterior belly Transverse process of atlas with superior oblique & rectus capitis lateralis muscle. Hyoglossus muscle Hypoglossal & spinal accessory nerves Occipital, internal & external carotid, facial & lingual aeries Internal jugular vein', 'role': 'assistant'}]