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': 'Nerve supply to platysma is? \nSelect and explain. \nA. Ansa cervicalis, B. Facial, C. Hypoglossal, D. Mandibular', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The platysma muscle is the most superficial muscle of the neck. Unlike most skeletal muscles, the platysma is located in the superficial fascia . The muscle extends superiorly from the inferior border of the mandible and inferiorly to the clavicle to the fascia of the anterior shoulder and thorax. The platysma muscle is a muscle of facial expression and therefore is innervated by the facial nerve (cervical branch of CN VII).', 'role': 'assistant'}]