Anatomy Of A Mollusk. Anatomy—mollusc head tentacle mouth oesophagus shell muscle gonad foot tentacle gut heart hypobranchial glands gut anus gills light receptor frill (epipodium) ventral view of anatomy of abalone source: Annotated classification:.protractor muscles as well as retractors;

Mollusk general body plan all mollusks have a similar body plan: They, however, also have many features in common. Though the modern mollusk show quite a wide degree of adaptable variability in form, there are several basic anatomical characteristics that can be found in all or most of them.