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Module 12: Phylum Arthropoda
Words you need to know.
10
Biology
9th Grade
06/06/2012

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Term
Exoskeleton
Definition
A body covering, typically made of chitin, that provides support and protection
Term
Molt
Definition
To shed an old exoskeleton so that it can be replaced with a new one
Term
Thorax
Definition
The body region between the head and the abdomen
Term
Abdomen
Definition
The body region posterior to the thorax
Term
Cephalothorax
Definition
A body region comprised of a head and a thorax together
Term
Compound eye
Definition
An eye made of many lenses, each with a very limited scope
Term
Simple eye
Definition
An eye with only one lens
Term
Open circulatory system
Definition
A circulatory system that allows the blood to flow out of the blood vessels and into various body cavities so that the cells are in direct contact with the blood
Term
Statocyst
Definition
The organ of balance in a crustacean
Term
Gonad
Definition
A general term for the organ that produces gametes
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