File:Fnana-08-00007-g009.jpg

English: Figure 9. Simplified diagrams summarizing the results of retrograde and anterograde fills of the lip papillae nerves in the onychophoran Euperipatoides rowelli. (A) Position of somata and fibers associated with the three lip papillae nerves, L1, L2, and L3, as revealed by retrograde fills. The innervation pattern of segmental head appendages (antenna, jaw, and slime papilla; see Mayer et al., 2010) is also shown (in gray) to demonstrate their spatial relationship to the lip papillae nerves. (B) Diagram of the onychophoran brain in dorsal view to demonstrate the position of major neural structures and neuropils (combined from various authors, e.g., Schürmann, 1987b; Strausfeld et al., 2006a). (C) Diagram of the onychophoran head in lateral view demonstrating the position of somata and fibers associated with the three nerves (L1, L2, and L3) supplying the lip papillae (numbered from 1 to 8). Based on series of Vibratome sections. (D) Color-coded diagram illustrating the innervation pattern of the lip papillae (numbered) by the corresponding nerves based on anterograde fills. Abbreviations: ag, antennal glomeruli; an, antennal nerve; cb, central body; co, first post-oral commissure; cp, connecting piece; dc, deutocerebral brain region; dm; definitive mouth opening; ey, eye; jn, jaw nerve; L1–L3, lip papillae nerves 1–3; le, first walking leg; ln, anterior and posterior nerves of the first walking leg; mb, lateral lobes of mushroom body; nc, nerve cord; on, optic nerve; pc, protocerebral brain region; sn, slime papilla nerve; sr, region of the nerve central nervous system supplying the slime papillae.