Coelomate Ecdysozoans

These flashcards cover essential vocabulary and concepts related to the lecture on Coelomate Ecdysozoans, focusing on the characteristics and classifications within the subphylum.

Ecdysis

The process of molting the cuticle in arthropods.

Coelomate

An organism with a true coelom, a body cavity lined by mesoderm.

Metamerism

Segmentation of the body; the division of an organism's body into repetitive segments.

Tagmatization

The specialization of body segments into distinct regions for different functions.

Hemocoel

The primary body cavity in arthropods, filled with blood.

Open circulatory system

A system in which blood is not always contained within blood vessels.

Chelicerata

A subphylum of arthropods that includes spiders and horseshoe crabs.

Mandibulata

A clade of arthropods that have mandibles as mouthparts.

Pancrustacea

A clade that includes crustaceans and hexapods (insects).

Hexapoda

A class of arthropods that includes insects, characterized by three pairs of legs and a three-part body.

Myriapoda

A subphylum of arthropods that includes centipedes and millipedes.

Crustacea

A class of arthropods that includes crabs, lobsters, and shrimps.

Diplopoda

The class of myriapods known as millipedes, characterized by two pairs of legs per body segment.

Chilopoda

The class of myriapods known as centipedes, with one pair of legs per body segment.

Araneae

An order of arachnids that includes spiders.

Scorpionida

An order of arachnids that includes scorpions.

Odonata

An order of insects that includes dragonflies and damselflies.