Arthropods Flashcards
Arthropods
Segmented invertebrates with jointed appendages
Jointed appendages
Body extension such as leg or antenna
What is the function of the exoskeleton in arthropods
Provides support and protection, made up of protein bound to chitin
What is Molting?
The way in which arthropods grow, by shedding their exoskeleton
Crustacea
2 pairs of antennae, chewing mouthparts. Lobsters cray fish and shrimp
Uniramia
One pair of antenna. Insects, millipeds and centipede
Chelicerata
Have a pincer like mouthparts and no antennae. Spiders and scorpions
Cephalothorax
The fused head and chest region
What is the carapace
A hard shell covering the cephalothorax
Abdomen
The long narrow tail region
Antennae
2 pairs used for balance taste and touch
Mandibles
Jaw like, chew and crush food
Jaw feet
Called maxillipeds, these 3 pairs of jaw feet hold and taste food
Pinching claws
Called chelipad, used for catching food and for defence
Walking legs
4 pairs on the last 4 segments used for locomotion
Swimmerets
Used for locomotion and transfer of sperm (in males)
Feathery gills
Attached to the walking legs used for respiration
Gill bailers
Move water across the gills so respiration can continue