What are the 3 trunks of the brachial plexus?,”Superior (C5, C6)Middle (C7)Inferior (C8 June 19, 2017 mfadmin Biology Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. What are the 3 trunks of the brachial plexus?,”Superior (C5, C6)Middle (C7)Inferior (C8 T1)”