Fig. 15

Innervation and musculature of papillae of the metameric area. a, b. Successive partial Z-projections showing general innervation of papillae (a), and sensory cilia surrounding ducts of the tubiparous glands (b). c. 5-HT-lir elements of papillae, d, e, f. Partial Z-projections showing details of acetylated α-tubulin-lir innervation and musculature of papilla and tubiparous glands. G. SP-lir sensory elements surrounding ducts of tubiparous glands of the papillae. Abbreviations: a – axon, cse – monociliated sensory ending, d – dendrite, dn – dorsal nerve, m – musculature, og – opening of the tubiparous gland duct, sc – sensory cell, p – papillae, pn – perikarya, vnr – varicose neurites, vcb – ventral ciliary band, vnc – ventral nerve cord, nr – neurites, tg – tubiparous gland. Muscles – red (phalloidin staining), acetylated α-tubulin-lir – magenta, FMRFamide-lir – cyan, 5HT-lir – orange, Substance P-lir – green