Nervous system of gastropods

The dissected central ring ganglia of Lymnaea stagnalis. Scale bar is 1 mm.
LBuG and RBuG: left and right buccal ganglia
LCeG and RCeG: left and right cerebral ganglia
LPeG and RPeG: left and right pedal ganglia
LPIG and RPIG: left and right pleural ganglia
LPaG and RPaG: left and right parietal ganglia
VG: visceral ganglion.

The nervous system of gastropods consists of a series of paired ganglia connected by major nerve cords, and a number of smaller branching nerves. It is sometimes called ganglionic.[1]

General layout of the gastropod ganglia. In most species, the brain is fused into a single, six-lobed, organ
Buccal ganglia of Aplysia californica.
  1. ^ Shigeno S, Parnaik R, Albertin CB, Ragsdale CW (2015-09-07). "Evidence for a cordal, not ganglionic, pattern of cephalopod brain neurogenesis". Zoological Letters. 1 (1): 26. doi:10.1186/s40851-015-0026-z. PMC 4657373. PMID 26605071.