Glossary

• anterior: the region of the body associated with the head. 

• dorsal: the region of the body associated with the back, such as the dorsal fin of dolphins 

• ectoparasite: a parasite that lives on the outside of its host

• eukayotic: cells containing membrane bound organelles.

• extracellular: occurring on the outside of cells.

• gonopore: a pore used to release or accept gametes.

• hemocoelomic fluid: fluid occurring in the hemocoelom, or blood filled cavity.

• nephridia: a liver-like organ used in urine production.

• nephridopores: pores in the outside of the animal, representing the end of the nephridea, where urine is expelled from.

• posterior: the region of the body associated with the anus, at the opposite end of the head.

• ventral: the region of the body associated with the belly, at the opposite side of the back.

• ventrolateral: occurring on the ventral side.