Ch. 36-1 Biology Terms

Front 1

Anus

Back 1

The posterior opening of the digestive tract

Front 2

Cerebral Ganglion

Back 2

One of the pair of nerve cell clusters that serve as a brain at the anterior end of some invertebrates

Front 3

Cloaca

Back 3

In animals, a common chamber into which the digestive, reproductive and excretory systems enter

Front 4

Cuticle

Back 4

In parasitic roundwords, a noncellular layer that protects the worm from the hosts digestive and immune system

Front 5

Cyst

Back 5

A resistant, thick-walled structure that encloses and protects a dormant organism

Front 6

Elephantiasis

Back 6

A condition of swollen lymphatic vessels in the limbs cause by a parasitic fliarial worm

Front 7

Filarial Worm

Back 7

One of the variety of parasitic roundworms that cause elephantiasis in humans and heartworm disease in dogs

Front 8

Flame Cell

Back 8

In a flatworm, a cell that collects excess body water and transfers it to the excretory system

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Flatworm

Back 9

The common name for any of the dorso ventrally flattened worms of the phylum Platyhelminthes

Front 10

Fluke

Back 10

A leaf-shaped parasitic flatworm

Front 11

Hookworm

Back 11

A parasitic roundworm that feeds on its hosts blood by cutting into the intestinal wall

Front 12

Mastax

Back 12

A muscular organ that breaks up food in fotifers

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Pharynx

Back 13

In flatworms, a muscular tube that leads to the gastrovacular cavity

Front 14

Pinworm

Back 14

Roundworm parasite taht lives in the lower intestine of humans but causes no serious disease

Front 15

Primary Host

Back 15

The host from whcih the adults of a parasite derive their nourishment and in which sexual reproduction occurs

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Proglottoid

Back 16

One of the many body sections of a tapeworm; contains reproductive organs

Front 17

Rotifer

Back 17

A small, aquatic invertebrate with a crown of cilia surrounding its mouth

Front 18

Roundworm

Back 18

A worm in the phylum Nematoda with a long, slender body that tapers at both ends, such as hook worms and pinworms

Front 19

Schistosomiasis

Back 19

A disease caused by a parasitic blood fluke of the genus Schistosoma

Front 20

Scolex

Back 20

A knob-shaped organ bearing hooks and suckers; lies at the anterior end of a tapeworm

Front 21

Tapeworm

Back 21

A parasitic flatworm that lives in the vertebrate intestine

Front 22

Tegument

Back 22

A continuous sheet of fused cells that covers the external surface of a fluke or tapeworm and protects the worm from the hosts digestive and immune system

Front 23

Trichonosis

Back 23

A disease caused by a parasitic roundworm of the genus Trichinella; characterized by muscle pain and stiffness

Front 24

Uterus

Back 24

A female reproductive structure where eggs are stored or fertilized or where development of the young occurs