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Canal circulating blood from the heart to the ventral artery of the lobster.

Main element of the nervous system extending over the entire ventral portion of the body.

Main organ of the nervous system; it is located in the cephalothorax.

Canal circulating blood from the heart through the posterior dorsal portion of the lobster.

Anterior cavity of the digestive tract located on the lower surface of the cephalothorax; it lets food enter.

Organ producing a secretion that contributes to digestion.

Terminal orifice of the digestive tract enabling ejection of fecal matter.

Section of the digestive tract from the pyloric stomach to the anus.

Male genital glands producing spermatozoa (sperm).

Canal circulating blood from the heart through the posterior ventral portion of the lobster.

Organ producing a secretion that allows toxic substances to be eliminated from the body; its opening is located at the base of the antennae.

Posterior chamber of the stomach; food particles from the cardiac stomach are digested here.

Anterior chamber of the stomach; its calcareous parts grind food into fine particles so they can be digested in the pyloric stomach.

Muscular organ helping blood to circulate.