Aspects of an Arthropod's Life
Arthropod Dissection Pre-Ap April 9, 2014- VU
What are Arthropods?
Arthropods fall under the kingdom Animalia. They are the largest phylum and are made up of various classes such as Class Crustacea and Class Insecta. Arthropods have jointed appendages, a head, thorax, and abdomen, have 3 or more pairs of jointed legs, and are protected by a chitinous exoskeleton.
Students will focus on Class Insecta and Class Crustacea of the Phylum Arthropod. They will compare and contrast the internal and external anatomy of both classes and explore the role of an Arthropods's integumentary system.
An Arthropod's Armor
The bodies of arthropods are supported by a hardened exoskeleton made of chitin. In arthropods, the nonliving exoskeleton is like a suit of armor. It is produced by the skin and then hardens into a protective outer-covering.This exoskeleton is a useful adaptation because it provides protection and prevents water loss but in order to grow, all arthropods must molt, or shed their exoskeleton and produce a new one
Insecta V.S Crustacea
Class Insecta belongs to Kindom Animalia, Phylum Arthropoda, and Sub-Phylum Hexapoda. Insects are found worldwide and are the only arthropods with wings. They play an important role in our ecosystems by pollinating plants, being important sporophytes, and are the source of food for a variety of organisms everywhere such as birds, anteaters, snakes, and the list goes on and on!
head, thorax, abdomen, compound eyes, spiracles, hind wing, fore wing, tibia, femur, tarsus, coxa, antennae, labium
brain, crop, gizzard, esophagus, mouth, labium, stomach, dorsal heart, ovary, rectum, anus, oviduct, ventral nerve chord
Crustaceans belong to the Kingdom Animalia and Phylum Arthropoda. Nearly all are aquatic and filter-feed but larger species are scavengers or predators. Their appendages are specialized for cutting, tearing, and collecting. They breathe in through gills and are called the, "Insects of the Sea," because they are very plentiful and can be found in a variety of places in the ocean.
long antennae, walking legs, short antennae, telson, uropods, abdomen, cephalothorax, eyes, carpace, cephalic groove, swimmerets
stomach, testis, heart, sperm duct, rectum, anus, mouth, green gland, esophagus, intestine, ventral nerve chord