Taxonomy
External Anatomy
Internal Anatomy
Summary of Systems
Are You Smart Enough?
100
Crayfish belong to this class.
What is Malacostraca?
100
This is the female's reproductive structure located between the 3rd set of walking legs.
What is the seminal receptacle?
100
2nd stomach
What is the pyloric stomach?
100
This nervous structure is located on the various mouth appendages and helps the crayfish taste and smell in the water.
What are chemoreceptors?
100
This muscle covers the cardiac stomach.
What are the Anterior Gastric Muscles?
200
The crayfish belongs to this subphylum
What is Crustacea?
200
The thread-like structures on the end of the antennae and antennules.
What are filaments?
200
Located on either side of the stomachs...also called the hepatopancreas or liver...delivers digestive juices and enzymes.
What are the Digestive Glands?
200
The crayfish's heart contains these holes
What are ostia?
200
CANDY BONUS: The crayfish nervous system consists of a brain, which is actually a pair of these two types of ganglia.
What is Supraesophageal and Subesophageal Ganglia?
300
This subphylum contains horseshoe crabs and spiders.
What is Chelicerata?
300
Protects the head region.
What is the rostrum?
300
Body Cavity of the crayfish
What is the Hemocoel?
300
Circulatory structure that the crayfish does NOT have but they do have arteries.
What are veins?
300
Primary organ responsible for the excretion of nitrogenous wastes.
What is the Antennal Gland?
400
This subphylum contains animals with one pair of antenae.
What is Uniramia?
400
Hard and rod-like male reproductive structure.
What is the male's copulatory swimmeret?
400
Dense, circular, and dark brown structure responsible for movement of the mandibles.
What are the Mandibular muscles?
400
A respiratory system structure that moves water away from the gills and is located on the 2nd maxillae.
What are the Gill Bailers?
400
CANDY BONUS: Name the 5 Crayfish Arteries
What are the Opthalmic, Antennal, Hepatic, Sternal, Dorsal Abdominal?
500
THE CANDY BONUS QUESTION: The full scientific name of the crayfish.
What is Procambrus clarkii?
500
The 3 appendages that are around the mouth and are used for touch, taste, and food handling.
What are the maxillae, maxillipeds, and mandibles?
500
Structure that secrets the exoskeleton
What is the epidermis?
500
The heart is located in this cavity.
What is the Pericardial Cavity?
500
This structure functions in balance and are located at the base of the antennules.
What are Statocysts?
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