Parasitology Ch. 12 and 13
1. All adult arthropods have .: jointed appendages
2. This is a special covering (protective layer) that envelops the entire body
called?: Chitin
3. Arthropods have a body cavity called the that is filled with
(this is a blood-like fluid that bathes the internal organs)
(don't have true blood): hemocoel; hemolymph
4. The most important organ system arthropods have are?: the reproductive system
5. Arthropods are dioecious and lay eggs. True/false?: true
6. Phylum Arthropoda is made of many .: subphyla
7. most of the arthropods important to veterinary parasitology are members of
,the subphyla?: Chelicerata and Mandibulata
8. Arthropods are important because?: They may serve as causal agents themselves, They may
produce venoms or toxic substances, They may serve as intermediate hosts, They may serve as vectors for bacteria,
viruses, spirochetes, rickettsiae, chlamydial agents, and other pathogens
9. Aquatic Arthropods are called?: Crustacea
10. Crustacea will always be creatures: aquatic
11. Crustacea are important because they serve as intermediate hosts for many
.: helminths
12. Crustacea also serve as causal agents because they are ectoparasites of
many .: fish, amphibians, and exotic reptiles
13. This is the name of the Insecta class: Mandibulata
14. This class has the largest number of members they are important because
,they serve as causal agents themselves, may produce toxins or venomous
substances, may serve as intermediate hosts for protozoan and helminths, and
may serve as vectors for other pathogens.: Mandibulata
15. The body of all adult insects is divided into sections?: 3
16. contains the insects brain, antennae, ventrally directed mouth parts, and
eyes (if present): head
17. the middle, always has three pairs of legs, and 1 or 2 pairs of wings (if
present): Thorax
18. hind section contains the reproductive organs and has no ventral or seg-
mented appendages: Abdomen
, 19. For an insect to become an adult, it must undergo changes in size, form, and
structure. This process is called?: metamorphosis
20. This has 3 developmental stages (egg, nymphal, and adult). The nymphal
stage resembles the adult stage (in winged insects, the wings may be absent
in the nymphal stage). Example: American cockroach. What type of metamor-
phosis is this?: Simple metamorphosis
21. This has 4 developmental stages (egg, larval, pupal, and adult). None of these
stages bear a resemblance to any of the other stages: Complex metamorphosis
22. The class of Insecta is divided into orders: 9
23. What is an infestation with mites or ticks called?: Acariasis
24. This is the fusion of the head and thorax, houses the mouthparts?: Capitulum
1. All adult arthropods have .: jointed appendages
2. This is a special covering (protective layer) that envelops the entire body
called?: Chitin
3. Arthropods have a body cavity called the that is filled with
(this is a blood-like fluid that bathes the internal organs)
(don't have true blood): hemocoel; hemolymph
4. The most important organ system arthropods have are?: the reproductive system
5. Arthropods are dioecious and lay eggs. True/false?: true
6. Phylum Arthropoda is made of many .: subphyla
7. most of the arthropods important to veterinary parasitology are members of
,the subphyla?: Chelicerata and Mandibulata
8. Arthropods are important because?: They may serve as causal agents themselves, They may
produce venoms or toxic substances, They may serve as intermediate hosts, They may serve as vectors for bacteria,
viruses, spirochetes, rickettsiae, chlamydial agents, and other pathogens
9. Aquatic Arthropods are called?: Crustacea
10. Crustacea will always be creatures: aquatic
11. Crustacea are important because they serve as intermediate hosts for many
.: helminths
12. Crustacea also serve as causal agents because they are ectoparasites of
many .: fish, amphibians, and exotic reptiles
13. This is the name of the Insecta class: Mandibulata
14. This class has the largest number of members they are important because
,they serve as causal agents themselves, may produce toxins or venomous
substances, may serve as intermediate hosts for protozoan and helminths, and
may serve as vectors for other pathogens.: Mandibulata
15. The body of all adult insects is divided into sections?: 3
16. contains the insects brain, antennae, ventrally directed mouth parts, and
eyes (if present): head
17. the middle, always has three pairs of legs, and 1 or 2 pairs of wings (if
present): Thorax
18. hind section contains the reproductive organs and has no ventral or seg-
mented appendages: Abdomen
, 19. For an insect to become an adult, it must undergo changes in size, form, and
structure. This process is called?: metamorphosis
20. This has 3 developmental stages (egg, nymphal, and adult). The nymphal
stage resembles the adult stage (in winged insects, the wings may be absent
in the nymphal stage). Example: American cockroach. What type of metamor-
phosis is this?: Simple metamorphosis
21. This has 4 developmental stages (egg, larval, pupal, and adult). None of these
stages bear a resemblance to any of the other stages: Complex metamorphosis
22. The class of Insecta is divided into orders: 9
23. What is an infestation with mites or ticks called?: Acariasis
24. This is the fusion of the head and thorax, houses the mouthparts?: Capitulum
