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Vocabulary Vocabulary ReviewReview
Ch 36 – Ch 36 –
ArthropodsArthropods
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A member of the phylum Arthropoda,
which includes invertebrate animals
such as insects, crustaceans, and
arachnids; characterized by
having segmented bodies and paired
appendagesArthropod
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A structure that extends from the main body, such
as a limb, tentacle, fin, or wing
Appendage
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A carbohydrate that forms part of the exoskeleton of arthropods and
other organisms, such as insects,
crustaceans, fungi, and some algae
Chitin
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An eye composed of many light
detectors separated by pigment cells
Compound eye
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The shedding of an exoskeleton, skin, feathers, or hair to
be replaced by new parts
Molting
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A member of the class Trilobita; an extinct
type of arthropod that is characterized by
many body segments each of which had one
pair of appendages
Trilobite
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In arthropods, a structure that is
composed of several fused body segments and that is typically
specialized for a specific function (plural, tagmata)
Tagma
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In some arthropods, a
jawlike mouthpart used to pierce and
suck food
Mandible
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In some arthropods, either of a pair of pincer-like appendages used to attack
prey
Chelicera
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The free-swimming larva of most crustaceans
Nauplius
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In arthropods, one of several long,
curved, hair-shaped
appendages (plural, cirri)
Cirrus
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A crustacean that has seven pairs of identical legs and
no carapace; examples include sowbugs and pill
bugsIsopod
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A crustacean that has five pairs of legs; examples include shrimp,
crabs, and lobsters
Decapod
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In arachnids and some crustaceans,
the body part made up of the head and the
thorax
Cephalothorax
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In arthropods, the mid-body region
Thorax
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A shield-like plate the covers the
cephalothorax of some crustaceans
and reptiles
Carapace
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In arthropods, the posterior tagma
Abdomen
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A feeler that is on the head of an
invertebrate, such as a crustacean or an
insect, and that senses touch, taste, or smell
Antenna
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In crustaceans, a second pair of
antennae, usually smaller than the
first
Antennule
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In arthropods, one of the pair of
appendages that have claws
Cheliped
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In some crustaceans, an
abdominal appendage
modified to allow movement,
respiration, or the carrying of eggsSwimmeret
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The unpaired, terminal
abdominal segment of crustaceans
Telson
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A flattened posterior
appendage in some crustaceans
Uropod
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Any gland that secretes a
substance to help transform food into substances
that the body can use
Digestive gland
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An excretory organ of some
crustaceans that is located at the
base of the antennae
Green gland
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An arthropod that has eight legs and
no wings or antennae; a
spider, scorpion, mite, or tick
Arachnid
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One of the second pair of appendages that are beside the
mouth of an arachnid and that
are used for chewing and handling prey
Pedipalp
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An organ that spiders and
certain insect larvae use to produce silky
threads for webs and cocoons
Spinneret
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In spiders and scorpions, an
organ for respiration that
has parallel folds that resemble the pages of a book
Book lung
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In insects, myriapods, and spiders, one of a
network of air tubes
Trachea
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An external opening in an
insect or arthropod, used in
respiration
Spiracle
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An excretory tube that opens into the back part of the intestine of
most insects and certain arthropods
Malpighian tubule