MaleMusFIG 36: Innervation of the gubernacular erectors.

A. Low-power TEM showing the innervation of the gubernacular erectors by two of the post cloacal sensilla neurons (PCB and PCG), transverse section. (PAG) Pre-anal ganglion; (gecL/R) gubernacular erectors; (grtL/R) gubernacular retractors; (dspL/R) dorsal spicule protractors. (Image source: N2Y [MRC] 597-5.)
B. TEM of boxed area in 36A showing close up of the lumbar ganglion and gubernacular muscles, basal lamina, proctodeum and spicule. (Bl) basal lamina. (Image source: N2Y [MRC] 559-6.)
C. Illustration of the gubernacular and surrounding region, left lateral view.