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