Image:Trichobotrium corte.JPG

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Innervation of a trichobothrium of the house spider Tegenaria, longitudinal section. When the hair shaft (Hs) is deflected (dashed line), the helmet structure (He) pushes against the dendritic terminals (T), triggering the generation of nerve impulses. Rlc = receptor lymph cavity, Sh = sheath cells. Hy = hypodermis, M = articulating membrane. inset: the directional sensitivity of a trichobothrium as seen from above; displacements of the hair shaft within each of the three sectors indicated are preferentially answered by one of three sensory cells (1, 2, 3)

[edit] Reference

Foelix, R.F., 1982. Biology of Spiders. Harvard University Press. Cambridge, Massachusetts, and London, England. Fig. 58, p. 74.

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