MaleSpicFIG 7B&C: Synapses in the spicules.

B. TEM of region indicated in 7A showing synapse between SPC and protractor muscles, transverse view. (Image source: N2Y [MRC] 1221.)
C. TEM of region indicated in 7A showing synapse between PCC and the vas deferens, transverse view. (Image source: N2Y [MRC] PAG 875.)