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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Deep petrosal nerve is formed from -
assistant
The correct answer is  Ans. is 'a'i.e., Symathetic plexus around carotid o Deep petorsai nerve (sympathetic) is a branch of the sympathetic plexus around the internal carotid artery'. It contains the postganglionic fibres from the superior cervical sympathetic ganglion.lt joins the greater petrosal nerve to form the nerve of the pterygoid canal.