1 Label the following diagram of the brachial plexus on Figure 11.13. C5,C6,C7,CB, and T1 roots Posterior division Radial nerve Superior, middle, and Medial, lateral, and Musculocutaneous nerve inferior trunks posterior cords Median nerve Anterior division Axillary nerve Uinar nerve 2 Label the following diagram of the lumbosacral plexus on Figures 11.14 and 11.15..