Virtual Dissection Lab Pre-Ap Vu P2

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Arthropods are located in the Animilia kingdom. They are known to have jointed appendixes and segmented bodies. Arthropoda in Greek means "jointed legs," and include insects, crustaceans, and arachnids. They are invertebrate creatures with an exoskeleton. They contribute to humans as food and more importantly pollinators for crops.


Learning about the respiratory will be a priority and leaning how this system functions as a whole will be projected throughout. We will also how these creatures affect our ecosystem and society.
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Crayfish usually live near a large body of water. The reason is for the source of food. They can live under logs or in sandy beaches. They can also go under water or walk on land to have a better chance of hunting prey with more options.
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Crayfish have many predators including birds, humans, raccoons, and other big fish.

Evolutionary Relationships of Crayfish

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Crayfish Dissection Tutorial

Crayfish External Parts

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Crayfish External Anatomy/Senses

antennule-used to sense things.

compound eye-used to help the crayfish see.

rostrum-protective plate between the eyes.

abdomen-tail region of the crayfish used for swimming.

swimmerets-help the crayfish swim.

maxillipeds-enable crayfish to taste and hold food.

telson-center of the tail.

walking legs-help the crayfish walk.

antennae-help the crayfish sense things.

uropod-the tail.

chelipeds-enable crayfish to catch different foods.

cephalothorax-the chest and head region.

External Parts/Senses at a Glance

The body of the crayfish is made up of 20 segments grouped into two main body parts, the cephalothorax and the abdomen. Each segment may have one pair of appendages, although in some groups these may be absent.

Crayfish Quiz

Works Cited