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22 Cards in this Set

  • Front
  • Back
jointed appendages
Each joint has a set of tendons, that can be pulled back and forth by tiny muscles. These flexible joints allow an infinite variety of movements
cephalothorax
head + thorax
tagmosis
Fusion of segments into functional units (tagma)
exoskeleton
Bodies are covered with a tough cuticle (= non-living outer layer) made of chitin and protein. acts as a exoskeleton.
molt
must molt to grow b/c of their exoskeletan
statocyst
A small organ of balance in many invertebrates, consisting of a fluid-filled sac that stimulates sensory cells and helps indicate position when the animal moves.
antennae
one of the jointed, movable, sensory appendages occurring in pairs on the heads of insects and most other arthropods.
compound eyes
made up of several different units of individual receptors
pedipalps
Second pair of appendages
chelicerae
First pair of appendages
spiracles
openings along the abdomen in which terrestrial forms can breath.
mandibles
modified appendages for tough biting and chewing
nauplius larva
All crustaceans share a common larval form
Biramous appendages
Consisting of or having two branches.
spinnerets
Any of various tubular structures from which spiders and certain insect larvae, such as silkworms, secrete the silk threads from which they form webs or cocoons.
Simple metamorphosis
No resting stage, juvenile looks like tiny adult
Complete metamorphosis
Resting stage (pupa), adults look different, live in different places, eat different things (ex. butterfly)
pheromones
Communicate by scent and sound, like insects.
trachea
a network of tiny tubes
malphigian tubules
projections of the digestive tract, used for insect excretion.
Rocky Mt. Spotted Fever
Lyme Disease
caused by ticks
chelicerae
Either of the first pair of fanglike appendages near the mouth of an arachnid, such as a spider, often modified for grasping and piercing.