Fig. 5
3D tomographic reconstruction of Chrysomallon squamiferum. Soft body outline shown in transparency. Ctenidium, anterior oesophagus, oesophageal gland, and digestive gland are rendered semi-transparent to show structures underneath. a-b. Digestive and excretory systems. c. Heart. d-e. Circulatory system. f. Radula and radula cartilage. g-h. Nervous system. Abbreviations: a, auricle; ac, anterior commissure; ct, ctenidium; dg, digestive gland; i, intestine; ln, lateral (visceral) nerve; ls, lateral swelling; mn, mantle nerve; ne, nephridium; oe, oesophagus; og, oesophageal gland; on, osphradial nerve; pn, pedal nerve; ps, pleural swelling; r, radula; rc, radula cartilage; re, rectum; sd, duct connecting stomach to digestive gland; sg, blood sinus under the ctenidium; si, blood sinus; ss, statocyst; st, stomach; tn, tentacular nerves; v, ventricle; ve, blood vessel. Scale bars: 250 μm