| Term | Definition |
|---|
| Psuedocoelomates divided into 2 superphyla | superphylum Lophotro; superphylum Ecdysozoa |
| superphylum Lophotro | includes segmented worms and molluscs |
| superphylum Ecdysozoa | includes arthropods |
| the phyla we are studying have the original _________ embryo and it persist as a space of ________ | blastocoel; body cavity |
| a psuedocoel is when: | the cavity lacks peritoneal lining |
| hydrostatic organ | used to extend various parts |
| hydrostatic skeleton | provides rigidity and antagonistic force to the muscle |
| tube-within-a-tube body | has complete digestive system mouth to anus but not very specialized |
| eutely | nuclear or cellular constancy common, either in whole body or in major organs |
| Protostomia | spiral; determinate (mosaic development) cleavage; mouth forms from at or near blastopore |
| PHYLUM ROTIFERA | rotifers or wheel animals (means "wheel" "bearing") |
| creatures in phylum rotifera are: | mostly aquatic and free-living |
| lorica | fibrous layer embedded in epidermis |
| head with ciliated trochal discs which forms the ______ | corona |
| mastax | modified pharynx |
| trophi | used for grinding food |
| trunk contains _____ organs | visceral |
| most species in the phylum rotifera are _______ organisms | diecious |
| mictic phase follows __________ cues | environmental |
| cyclomorphosis | seasonal change in form |
| PHYLUM NEMATOMORPHA | horsehair worms or gordian worms |
| adult species in phylum nematomorpha are _______ in freshwater habitats | free-living |
| larvae of phylum nematomorpha are _____ of terrestrial insects | obligate endoparasites |
| in adult nematomorpha the pseudocoelom filled with ______ | loose cells |
| adults in nematomorpha have a ______ digestive tract | vestigial |
| osmoregulatory in nematomorpha is ________ | nonexistant |
| PHYLUM ACANTHOCEPHALA | thorny or spiny-headed worms |
| phylum acanthocephala adults are all endoparasites of the vertebrate's ___________ | small intestines |
| phylum acanthocephala larvae infect body cavity of either _____ or aquatic crustaceans | terrestrial insects; aquatic crustaceans |
| adults in Acanthocephala with ______ proboscis and neck | spiny |
| lemniscus | 2 organs behind proboscis, hold fluid for extension of proboscis |
| eutely | fixed number of giant nuclei across species |
| multiple functions of syncytial tegument in Acanthocephala | Protection for digestion and immune system; Osmoregulation/excretion (only one class of acanthocephalans with protonephridia; Absorption of nutrients |
| PHYLUM NEMATODA | roundworms, nemas (nematodes) |
| cuticle for phylum nematoda | Non-living, primarily proteinaceous body covering |
| creatures in phylum nematoda always molt _ times in their life | 4 |
| functions of the cuticle in Nematoda: | maintains internal turgor pressure; mechanical and chemical protection |
| hypodermal cords: | syncytial with nuclei lying in inward bulges of the hypodermis |
| locations of hypodermal cords: | 2 lateral, 1 dorsal, 1 ventral |
| ________ in lateral hypodermal cords | excretory canal |
| hypodermal cords are not nerve cords but often: | nerve cords are in dypodermal cords |
| non-contractile portions of the somatic muscles: | extend out to the motor nerve in the dorsal and ventral nerve |
| species in Nematoda have ________ digestive system | complete (tube-with-a-tube) |
| centralization of the nerve rings in species of phylum Nematoda are limited to _________ and ________ | anterior and posterior |
| species in phylum Nematoda do not have flame cells but they do have a similar (homologous) type called ________ | Renette cells |
| oviparous | egg-laying |
| ovoviviparous | (eggs form then hatch internally, apparent live birth |
| viviparous | true live birth; shelled egg not formed; as in most mammal; not in nematodes |
| Necator americanus and Ancylostoma duodenale | human hookworms; eggs on ground; infective larvae burrow into skin |
| Trichinella spiralis | trichina or pork worm causes trichinosis (larvae in muscle); get from eating poorly cooked infected pork |
| Trichuris trichiura | human whipworm; in colon; eggs on ground and ingested |
| Wuchereria bancrofti and Brugia malayi | vectored by mosquito; infect nymph nodes; elephantiasis |
| Onchocerca volvulus | vectored by black flies; subcutaneous; can cause river blindness |
| Dirofilaria immitis | the dog heartworm; right ventricle of heart and pulmonary arteries; vectored by mosquitoes |
Combine with other sets
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