1. Vocabulary Review Ch 34 – Flatworms, Roundworms, and Rotifers

2. In flatworms, the muscular tube that leads form the mouth to the gastrovascular cavity Pharynx

3. In a flatworm, a cell that has flagella or cilia that move waste products through the body Flame Cell

4. One of a pair of nerve- cell clusters that serve as a primitive brain at the anterior end of some invertebrates, such as annelids Cerebral ganglion

5. An organ that is covered by pigment in some invertebrates and protozoa and that detects changes in the quantity and quality of light Eyespot

6. A parasitic flatworm of the class Trematoda or Monogenea Fluke

7. On the external surface of a parasitic invertebrate, a layer that counters the defenses of the host’s body Tegument

8. The host from which an adult parasite gets its nourishment and in which reproduction occurs Primary Host

9. A host that gives food and shelter to immature stages of a parasite Intermediate Host

10. A disease that is caused by a parasitic blood fluke of the genus Schistosoma and that affects the skin, intestines, liver, vascular system, or other organs Schistosomiasis

11. The head of a tapeworm, which has hooks and suckers to adhere to the host tissues Scolex

12. A cavity or cell that contains embryos or bacteria in a resting stage Cyst

13. A member of the phylum Nematoda, which consists of animals that have smooth skin and a long, cylindrical, and unsegmented body that tapers at both ends Roundworm

14. A waxy or fatty and watertight layer on the external wall of epidermal cells Cuticle

15. A parasitic roundworm found in the intestines of mammals Hookworm

16. A disease that is caused by a parasitic roundworm of the genus Trichinella that results from eating the larvae in undercooked meat and that is characterized by diarrhea, fever, abdominal and muscle pain, and affliction of the lungs, nervous system, and heart Trichinosis

17. A nematode worm parasite that lives in the intestine of humans and animals; females lay their eggs around the anus, which causes itching Pinworm

18. One of a group of nematodes that cause diseases such as elephantiasis in humans and heartworm disease in dogs and cats Filarial Worm

19. A disease in humans that is caused by filarial worms and that is characterized by fluid accumulation that results in thickened skin around swollen extremities Elephantiasis

20. A member of the phylum Rotifera, which consists of small, aquatic invertebrates whose ring of cilia around the mouth makes the animal look like a spinning wheel Rotifer

21. The muscular pharynx in rotifers Mastax

22. In all vertebrates except mammals and reptiles, a chamber in the intestine that receives materials from the digestive, reproductive, and excretory systems Cloaca

23. A type of reproduction in which unfertilized eggs develop into adults Parthenogenesis