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crustacea
N/A
20
Environmental Studies
11th Grade
02/05/2013

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Term
Antennae
Definition
Head that functions as an organ for touch.
Term
Mandible
Definition
Appendages used for cutting, grinding, and holding located behind the antennae.
Term
Maxillae
Definition
2 pairs of them that function as respiratory and feeding organs.
Term
Biramous
Definition
They are divided into 2 parts
Term
Telson
Definition
The last division of the body of the Crustacean.
Term
Uropod
Definition
Appendages of the last body segment of the Crustacean
Term
Carapace
Definition
Part of the exoskeleton that covers the cephalothorax.
Term
Gonopore
Definition
Genital pore
Term
Flexor
Definition
Muscles that pull in a specific structure.
Term
Extensor
Definition
Muscles that straighten out a specific structure.
Term
Sinus
Definition
A blood filled space on the venous side of the circulatory system that produces numerous hemolymph borne agents.
Term
antennal/maxillary/green gland
Definition
Glands located in the antennae, that serve as excretory glands.
Term
Cuticle
Definition
Outermost layer of skin. Their exoskeleton.
Term
Ecdysis
Definition
Molting or shedding an outer cuticular layer.
Term
Copepod
Definition
Subclass of small Crustaceans that are found in the sea and nearly every fresh water environment
Term
Isopod
Definition
Small sessile-eyed aquatic or terrestrial crustaceans with the body composed of seven free thoracic segments each bearing a pair of similar legs
Term
Decapod
Definition
Crustaceans as shrimps, lobsters, and crabs with five pairs of thoracic appendages
Term
Chelae
Definition
Pincers or claws at the end of crustaceans appendages.
Term
Branchiopod
Definition
Aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding
Term
nauplius (nauplii):
Definition
A crustacean larva in usually the first stage after leaving the egg and with three pairs of appendages, a median eye, and little or no segmentation
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