| A | B |
| ascaris | roundworm that lives in the human intestine and feeds off blood |
| cuticle | thick outer covering |
| Nematoda | phylum of animals containing roundworms |
| parasitic | relationship between two organisms where one benefits and the other is harmed |
| pseudocoelom | a tube within a tube; "False" cavity |
| bilateral | type of symmetry of nematoda |
| dioecious | separate males and females |
| thrashing | movement caused by contraction of longitudinal muscles |
| cryptobiosis | a temporary state where an organism's metabolic activity is at a standstill |
| unsegmented | having a body that is not divided into segments |
| nema | means "thread" |
| trichinella | can be ingested in undercooked/raw meat (usually pork) |
| hookworm | larvae live in soil and burrow into feet or exposed skin of host |
| pinworm | most commonly affect children and lay eggs near anus at night causing severe itching |
| osmosis | distributes nutrients through body via this process |