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29 Cards in this Set
- Front
- Back
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visceral mass |
the central section of a mollusks body that contains the organs |
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mantle
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a layer of tissue that covers the body of many invertebrates |
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foot |
an appendage that some invertebrates use to move |
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radula |
a tongue like organ that is covered with teeth and is used for feeding |
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trochopore |
a free swimming ciliated larva of many worms and some mollusks |
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siphon |
a hollow tube of mollusks used for sucking in and expelling sea water |
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seta |
one of the many external bristles or spines that project from the body of an animal |
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septum |
a dividing wall, such as the internal wall between an annelids adjacent segments |
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cerebral ganglion |
one of the pair of nerve cell clusters that serve as a primitive brain |
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thorax |
in arthropods, the mid body region |
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cephalothorax |
in arachnids and some crustaceans, the body part made up of the head and the thorax |
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appendage |
a structure that extends from the main body, such as a limb, tentacle, fin, or wing |
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trachea |
in insects, myriapods, and spiders, one of a network of air tubes |
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spiracle |
an external opening in an insect or arthropod used in respiration |
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Mapighian tubule |
an excretory tube that opens into the back of part of the intestine of most insects and certain arthropods |
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compound eye |
an eye composed of many light detectors separated by pigment cells |
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molting |
the shedding of an exoskeleton, skin, feathers, or hair to be replaced by new parts
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chelicera |
in arachnids, either a pair of appendages used in attacking prey
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pedipalp |
in certain arthropods, one of the second pair of appendages |
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spinneret |
an organ that spiders and certain insect larvae used to produce silky threads for webs and cocoons |
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mandiable |
a type of mouthpart found in some arthropods that is used for eating |
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metamorphosis |
a phase in the life cycle of many animals, during which rapid change from immature organism to adult takes place |
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chrysalis |
the hard shelled pupa of certain insects such as butterflies |
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pupa |
the immobile non feeding stage between larva and the adult of insects that undergo complete metamorphosis |
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caste |
a group of insects in a colony that have a specific function |
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ossicle |
one of the small calcium carbonate plates that make up the endoskeleton of an echinoderm |
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water vascular system |
in echinoderms a system of canals filled with a watery fluid |
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tube foot |
one of the many small flexible fluid filled tubes that project from the body of an echinoderm |
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skin gill |
a transparent that projects from the surface of a sea star and that enables respiration |
