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60 Cards in this Set
- Front
- Back
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Acetabulum
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Usually have a second midventral or posterior sucker
Prevents dislodgement, not for ingestion |
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Acoela
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Nutritive Cells (no intestine)
Simple pharynx |
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Aspidogastrea
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Relatively small group of trematodes
Most with a single host (mollusc) No oral sucker but large ventral sucker that is divided by septa |
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Auricle
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often associated with the Chemoreceptors
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Bilateral symmetry
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symmetry on one plane
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Bulbous pharynx
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Thickened walls and usually shorter
May have multiple pharynges/mouths |
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Cephalization
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Anterior Concentration
Lead with sense organs Sense organs are near processing centers (brains?) |
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Cercaria
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A larval form of the parasite, developed within the snail. It has a large swimming tail.
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Cerebral ganglion
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brain?
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Circular muscle
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which decrease the diameter but stretch the length of the earthworm's body when contracted.
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Conditioning
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Capable of Learning
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Cysticercus
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Bladder Worm
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Diagonal (dorsoventral) muscle
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muslces across the body
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Digenea
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Includes most trematodes
Endoparasites of all major groups of vertebrates (definitive hosts) Economically and medically important Life cycle includes at least two infective stages Intermediate host is usually a gastropod Found in blood, digestive tract, and digestive glands |
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Enzymatic gland Cell
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occur on a blind sac arrangement and on the intestine
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Genital pore
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A small opening on the side of the head in some gastropods through which the penis is protruded. Also known as genital orifice.
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Fissiparous asexual reproduction
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Asexual Reproduction
Transverse fission |
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Flame Cell
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A flame cell is a specialized excretory cell
Flame cells function like a kidney, removing waste materials. Bundles of flame cells are called protonephridia. |
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Gotte’s larva
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a four-lobed ciliated larva
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Ganglion
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brain?
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Haptor
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a posterior attachment organ
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Hypodermic insemination
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in which sperm is injected through the partner's body surface
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Lateral nerve cord
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longitudinal nerve cord
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Neoblasts
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cells that seem able to participate in any type of development
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Mesenchyme
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contains testes and ovaries
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Mesoderm
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3rd Germ Layer
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Nephridiopore
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Protonephridial system empties through
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Metacercaria
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A cercaria encysted and resting.
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Miracidium
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A miracidium is a small free-living larval stage of parasitic flatworms in the class Trematoda.
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Monogenea
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Monogenetic flukes
Ectoparasitic – usually on the gills, scales, fins of fish Life cycle has one host (i.e., no intermediate host) – “one generation” Dorsoventrally flattened with a posterior attachment organ - haptor |
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Oesophagus
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The tube that carries food from the pharynx to the stomach.
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Oncosphere
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the larva of the tapeworm contained within the external embryonic envelope within the egg and armed with six hooks
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Opisthaptor
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Well developed suckers, hooks or claws
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Opisthorchis sinensis
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Chinese Liver Fluke
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Oral sucker
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surrounds mouth
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Ovary
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female reproductive organ
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Oviduct
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the passage from the ovaries to the outside of the body is known as the oviduct
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Penis
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flatworm Penis Primary Organ
Often equipped with barbs, hooks or stylets Some inject sperm hypodermically |
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Phagocyte cell
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Phagocytic cells, or phagocytes, use active transport to engulf bacteria, viruses, or other debri inside of a cell in order to neutralize them
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Pharynx
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Simple pharynx
Short length of invaginated epidermis, no specialized muscles Intestine is unbranched Food is swept into the pharynx through ciliary action Plicate Cylindrical fold projecting into the pharyngeal cavity Can be extended as a feeding proboscis Usually associated with a multibranched intestine Bulbous Thickened walls and usually shorter May have multiple pharynges/mouths |
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Phototactic
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flatworms negatively phototactic (movement or org. away from light)
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Pigment cup eye
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One or more pairs
Provides direction and intensity info. |
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Pilidium larvae
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ciliated free-swimming larva
Phylum Nemertea |
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Plicate
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having parallel folds
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Plicate pharynx
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Cylindrical fold projecting into the pharyngeal cavity
Can be extended as a feeding proboscis Usually associated with a multibranched intestine |
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Polycladida
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most complex flatworm guy
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Proboscis
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Separate from the digestive tract
Coiled and often longer than the worm |
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Protonephridia
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first kidney
For waste removal and water balance Large S/V ratio makes osmoregulation difficult |
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Proglottid
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Strobila-main portion of the body
Proglottids bud (strobilization) from the neck- few to several 1000 Involved in reproduction |
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Prohaptor
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(Anterior)
Pair of adhesive structures with suckers or adhesive pads |
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Protonephridia
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first kidney
For waste removal and water balance Large S/V ratio makes osmoregulation difficult |
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Redia
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a larval stage of many trematodes, usually parasitic in a host snail, produced by a sporocyst and producing daughter rediae or cercariae
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Rhabdites
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are rodlike structures in the cells of the epidermis or underlying parenchyma in certain turbellarians. They are discharged in mucous secretions. They are a defensive mechanism, they'll dissolve in water, and they are distasteful to most animal who would prey on rhabditia.
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Rhabdocoela
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Simple intestine
Bulbous pharynx flatworm gut |
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Sporocyst
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any cyst or sac containing spores or reproductive cells.
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Rheoreceptors
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sense water current
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Rhynchocoel
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=Nemertea
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Scolex
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crazy looking tapeworm head
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Simple pharynx
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Short length of invaginated epidermis, no specialized muscles
Intestine is unbranched Food is swept into the pharynx through ciliary action |
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Simultaneous hermaphrodite
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Permits simultaneous exchange of sperm and eggs
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