in flatworms, a cilia-lined, bulblike cell that moves water and certain substances into excretory tubules for elimination outside the body

group of nerve-cell bodies that coordinates incoming and outgoing nerve impulses

in free-living flatworms, the tubelike muscular organ that can extend out of the mouth and suck food particles into the digestive tract.

continuously formed, detachable section of a tapeworm that contains male and female reproductive organs, flame cells, muscles, and nerves; breaks off when its eggs are fertilized and passes out of the host's intestine

ability to replace or regrow body parts missing due to predation or damage.

parasitically adapted, knob-like anterior end of a tapeworm, having hooks and suckers that attach to the host's intestinal lining

the pseudocoelom in roundworms; the fluid within a closed space that gives rigid support for muscles to work against

disease caused by eating raw or under-cooked mean, usually pork, infected with Trichinella larvae.

closed circulatory system

blood is confined to the vessels as it moves through the body.

respiratory structure of most mollusks and aquatic arthropods

membrane that surround's a mollusk's internal organs.

structure through with most mollusks eliminate metabolic wastes from cellular processes.

open circulatory system

blood is pumped out of vessels into open spaces surrounding body organs.

rasping tounguelike organ with rows of teeth that many mollusks use in feeding

tubular organ through with octopuses and squids eject water, at times so rapidly that their movement appears jet-propelled.

thickened band of segments that produce a cocoon from which young earthworms hatch

sac in which food and soil are stored until they pass to the earthworm's gizzard

muscular sac in birds that contains hard particles that help grind soil and food before they pass into the intestine

tiny bristle that digs into soil and anchors an earthworm as it moves forward.

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Ch. 25 Vocabulary

Worms and Mollusks

Question	Answer
Flame cell	in flatworms, a cilia-lined, bulblike cell that moves water and certain substances into excretory tubules for elimination outside the body
Ganglion	group of nerve-cell bodies that coordinates incoming and outgoing nerve impulses
pharynx	in free-living flatworms, the tubelike muscular organ that can extend out of the mouth and suck food particles into the digestive tract.
proglottid	continuously formed, detachable section of a tapeworm that contains male and female reproductive organs, flame cells, muscles, and nerves; breaks off when its eggs are fertilized and passes out of the host's intestine
regeneration	ability to replace or regrow body parts missing due to predation or damage.
scolex	parasitically adapted, knob-like anterior end of a tapeworm, having hooks and suckers that attach to the host's intestinal lining
hydrostatic skeleton	the pseudocoelom in roundworms; the fluid within a closed space that gives rigid support for muscles to work against
trichinosis	disease caused by eating raw or under-cooked mean, usually pork, infected with Trichinella larvae.
closed circulatory system	blood is confined to the vessels as it moves through the body.
gill	respiratory structure of most mollusks and aquatic arthropods
mantle	membrane that surround's a mollusk's internal organs.
nephridium	structure through with most mollusks eliminate metabolic wastes from cellular processes.
open circulatory system	blood is pumped out of vessels into open spaces surrounding body organs.
radula	rasping tounguelike organ with rows of teeth that many mollusks use in feeding
siphon	tubular organ through with octopuses and squids eject water, at times so rapidly that their movement appears jet-propelled.
clitellum	thickened band of segments that produce a cocoon from which young earthworms hatch
crop	sac in which food and soil are stored until they pass to the earthworm's gizzard
gizzard	muscular sac in birds that contains hard particles that help grind soil and food before they pass into the intestine
setae	tiny bristle that digs into soil and anchors an earthworm as it moves forward.

Created by: hannahworrell

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