Show:
General Characteristics
of Arthropods I
General Characteristics
of Arthropods II
Crayfish Respiratory System
Crayfish Circulatory System
Crayfish Miscellaneous
100
The two things that the exoskeleton provides the arthropod.
What are support and protection?
100
The kind of appendages that all arthropods have.
What is jointed?
100
The organs that crayfish and other underwater creatures use to get oxygen from water.
What are gills?
100
The cavity that blood collects in before entering the heart.
What is pericardial sinus?
100
The appendages used to break food into small chunks.
What are mandibles?
200
The process by which an arthropod sheds an old outer covering.
What is molting?
200
The name for an eye with many lenses.
What is compound?
200
The place where water goes before it enters the gills.
What are gill chambers?
200
The cavity into which the blood flows after being pumped by the heart.
What is sternal sinus?
200
The organ of balance in a crayfish.
What is statocyst?
300
The three body divisions of arthropods.
What are head, thorax, and abdomen?
300
Arthropods use these for taste and smell.
What are antennae?
300
The tiny appendages near the mouth that keep water flowing through the gills and also help crayfish handle food.
What are maxillae?
300
This gland cleans blood of its impurities.
What is green gland?
300
The appendages used for defense as well as grabbing onto prey.
What are chelipeds?
400
The name for when the head and thorax are united in one segment.
What is cephalothorax?
400
The type of circulatory system that arthropods have.
What is open?
400
The condition that must be met in order for gills to be able to extract oxygen from water.
What is continuous circulation?
400
A position that animals with open circulatory systems cannot stay in for long?
What is on back?
400
The appendages that form the flipper-shaped tail that crayfish use for swimming. (two)
What are uropods and telson?
500
The body region between the head and abdomen.
What is the thorax?
500
The location of an arthropod's nervous system.
What is ventral?
500
The form that oxygen must be in order for it to be used by underwater creatures.
What is oxygen gas dissolved in water?
500
The way that blood loss is prevented when a limb is broken off.
What is double membrane?
500
Appendages that are used to keep water flowing into the gills, to aid in swimming, and to assist in reproduction.
What are swimmerets?