MaleMusFIG 26: Spicule attachments to the retractors.

A. Low-power TEM featuring the attachments between the retractor muscles and the spicules, transverse section. (PAG) Pre-anal ganglion; (v/dBWM) ventral and dorsal body wall muscle; (v/dsrL/R) ventral and dorsal spicule retractors,(v/dspL) ventral and dorsal spicule protractors; (Sph) sphincter. (Image source: N2Y [MRC] 596-24.)
B. TEM of boxed area in 25A showing close up of the hemidesmosomes that connect the muscle to the basal lamina (Bl). (Image source: N2Y [MRC] 667-19.)
C. Illustration depicting the gap junction connections between different muscle types. (Based on N2Y series, MRC.)