All are true about brachial plexus EXCEPT:-
High-Yield Explanation
Contribution by C4 to brachial plexus is pre-fixed brachial plexus. Post-fixed brachial plexus has contribution by T2 Brachial plexus is formed by the anterior primary rami of C5, 6, 7, 8 & T1 It consists of roots, trunks, cords, divisions and branches. A total of 17 branches are given off from the plexus including 2 from roots, 2 from trunks and 13 from cords.