DEEP PETROSAL nerve arises from
The deep petrosal nerve, sympathetic in nature is a branch of the sympathetic plexus around the internal carotid aery. It contains postganglionic fibres from the superior cervical sympathetic ganglion. The nerve joins the greater petrosal nerve to form the nerve of the pterygoid canal. The sympathetic fibres in it are distributed through the branches of the pterygopalatine ganglion. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.
Facial nerve
Glossopharyngeal nerve
Plexus around internal carotid aery
Mandibullar nerve
Head and neck