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87 Cards in this Set

  • Front
  • Back

Special sense organs in roundworms

Amphids

Thick, flexible outer covering of a roundworm; shed during juvenile growth stages

Cuticle

One of the main differences in the nervous system of a flatworm and a roundworm is that the roundworm has this

Nerve ring

A hollow, fluid-filled cavity that is partially lined by mesoderm

Pseudocoelom

The name for inflammation of the lining of the abdominal cavity

Peritonitis

One of the main sources of contamination for almost all parasitic roundworms in third world countries

Water

Term describing animals with three fundamental cell layers

Triploblastic

One of the main traditional sources for trichinella infestation in humans

Pork

Roundworm eggs are able to survive environmental ____________

Extremes

Described as a disease right out of the Old Testament causing fiery pain in the legs and feet as it erupts

Guinea worm

The Nematode that attacks soybeans is thought to be brought in from this country

China

The most common parasitic worm infection in people worldwide; also known as "wandering worms"

Ascaris

A type of hookworm infestation where the worms bore holes into your skin and make tunnels

Larva migrans

The Greek meaning of the word "nematos"

Thread

The most life-threatening canine worms

Heartworms

Roundworms have a short _______ for waste compaction

Rectum

Condition described as swollen tissue caused by obstruction of the lymph fluid

Lymphedema

One reason why hookworms are spread skin easily in Africa is because they do not have these

Shoes

Both Nematodes and members of Platyhelminthes display this symmetry

Bilateral

Causes anal itching and is often seen in children

Pinworms

Animals that have a true body cavity

Coelomate

Interconnected glandular cells making up the excretory system of a roundworm

Renette cells

Disease that involves thickening and hardening of the skin; often a result of Filarial Worm infection

Elephantiasis

Parasitic nematode worms that can cause a potentially serious infection; best known intermediate host is pigs

Trichinella

Roundworms have great __________ importance

Ecological

Bloodsucking roundworms living in the small intestine; live in warm, moist soils and can penetrate the soles of your feet

Hookworms

Most species of roundworms differ in the size of the male and female organism. This is called

Dimorphism

Intermediate hosts of a canine or feline heartworm

Mosquitoes

Roundworms are good for the soil because they add nutrients and ______________

Aerate the soil

Number of digestive tract openings on a roundworm

Two

Means form

Eidos

Are cylindrical, unsegmented worms that are tapered at both ends

Roundworms

Serves as a hydrostatic skeleton

Pseudocoelom

A series of canals or tubules or called renette cells

Excretory system

Most use _________ fertilization

Internal

A big source in biology study

Caenorhabditis elegans

Plnnat nematodes

Root-knot nematode and cyst-nematode

Ways plant nematodes can be moved

Tractors, wind, and heavy rain

Ascaris lumbricoides

Giant roundworms

How long do giant roundworms stay in the lungs

2 weeks

The scientific name for the Nematode that causes pinworms in humans

Enterobius vermicularis

Common symptoms of pinworms

Anal itching

How big are pinworms and what do they look like

A quarter of an inch; small white thread

How are pinworms transmitted

Person to person via fomites

What do female pinworms do at night

Crawl out and lay eggs

How long can pinworms eggs survive on a surface

2 to 3 weeks

How are pinworms treated

Dewormer; pyrantel

How common is pinworms in the USA

Most common worm infection

Scientific name of the most common form of trichinella infestation in humans

Trichinella spiralis

Common animal hosts of trichinella species

Mammals

How do humans usually contract trichinosis

By eating raw, uncooked meat

Scientific name of the most common form of filarial worm infestation in humans

Wuchereria bancrofti

Caused by filarial worm infection

Lymphatic filariasis lymphedema

What countries do we most often see problems with filariasis

Africa, Subtropical and tropical areas, Brazil, Haiti, and India

Ways that children can become infected with hookworms

Walking barefoot, playing in soil, breastfeeding

How are hookworms spread

Through feces

How do hookworms get their name

Appendages around their mouth

Symptoms of hookworm infection

Itching, rash, stomach pain, and diarrhea

Have a blind gut with a single opening

Flatworms

Use Protonephridia for excretion

Flatworms

Phylum Platyhelminthes

Flatworms

Acoelomates which lack a true body cavity

Flatworms

External body covering called tegument or neodermis

Flatworms

Least complex of all types of worms

Flatworms

Most species are monoecious

Flatworms

Larval stages often occupy an intermediate host before reaching adulthood in the definitive host

Flatworms

Head is often modified for attachment to the host(scolex)

Flatworms

Includes planaria, Dugesia

Flatworms

Includes tapeworms

Flatworms

Includes monogenetic and digenetic flukes

Flatworms

Mouth opens into the pharynx

Flatworms and roundworms

Ganglia serve as a simple brain

Flatworms and roundworms

Ocelli in some species

Flatworms and roundworms

Triploblastic

Flatworms and roundworms

Exhibit bilateral symmetry

Flatworms and roundworms

Have a pseudocoelom

Roundworms

Have a digestive tract with two openings

Roundworms

Have sense organs called amphids

Roundworms

Use renette cells for excretion

Roundworms

Tube-within-a tube body plan

Roundworms

No larval stage; usually 4 juvenile stages are separated by a molting

Roundworms

Most species are dioecious and show sexual dimorphism

Roundworms

Phylum Nematoda

Roundworms

Outer body covering is a thick, flexible cuticle

Roundworms

Includes Trichinella

Roundworms

Includes Ascaris

Roundworms

Includes hookworms

Roundworms