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22 Cards in this Set
- Front
- Back
jointed appendages
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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
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cephalothorax
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head + thorax
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tagmosis
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Fusion of segments into functional units (tagma)
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exoskeleton
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Bodies are covered with a tough cuticle (= non-living outer layer) made of chitin and protein. acts as a exoskeleton.
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molt
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must molt to grow b/c of their exoskeletan
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statocyst
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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.
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antennae
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one of the jointed, movable, sensory appendages occurring in pairs on the heads of insects and most other arthropods.
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compound eyes
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made up of several different units of individual receptors
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pedipalps
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Second pair of appendages
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chelicerae
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First pair of appendages
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spiracles
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openings along the abdomen in which terrestrial forms can breath.
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mandibles
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modified appendages for tough biting and chewing
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nauplius larva
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All crustaceans share a common larval form
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Biramous appendages
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Consisting of or having two branches.
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spinnerets
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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.
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Simple metamorphosis
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No resting stage, juvenile looks like tiny adult
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Complete metamorphosis
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Resting stage (pupa), adults look different, live in different places, eat different things (ex. butterfly)
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pheromones
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Communicate by scent and sound, like insects.
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trachea
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a network of tiny tubes
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malphigian tubules
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projections of the digestive tract, used for insect excretion.
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Rocky Mt. Spotted Fever
Lyme Disease |
caused by ticks
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chelicerae
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Either of the first pair of fanglike appendages near the mouth of an arachnid, such as a spider, often modified for grasping and piercing.
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