Vocabulary Review Ch 36 – Arthropods

A member of the phylum Arthropoda, which includes invertebrate animals such as insects, crustaceans, and arachnids; characterized by having segmented bodies and paired appendages Arthropod

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 bugs Isopod

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 eggs Swimmeret

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