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Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
Biology 28 2 groups of arthropods
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Biology 28 2 groups of arthropods

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  • 1. 28-2 Groups of Arthropods
  • 2. Cephalothorax• Region of a crustacean formed by the fusion of the head with the thorax.
  • 3. thorax• Body part of a crustacean that lies just behind the head and houses most of the internal organs
  • 4. Abdomen• Posterior part of an arthropod’s body
  • 5. carapace• In crustaceans, the part of the exoskeleton that covers the cephalothorax; in turtles and tortoises, the dorsal part of the shell
  • 6. mandible• Mouthpart adapted for biting and grinding food
  • 7. Cheliped• One of the first pair of legs of decapods
  • 8. swimmeret• Flipper- like appendages used by decapods for swimming.
  • 9. chelicerae• Pair of mouthparts in chelicerates that contain fangs and are used to stab and paralyze prey.
  • 10. pedipalps• Pair of mouthparts in chelicerates that are usually modified to grab prey.
  • 11. Spinneret• Organ in spiders that contains silk glands
  • 12. Key concept• Arthropods are classified based on the number and structure of their body segments and appendages- particularly their mouthparts.
  • 13. Key Concept• Crustaceans typically have two pairs of antennae, two or three body sections, and chewing mouthparts called mandibles.
  • 14. Key Concept• Chelicerates have mouthparts called chelicarae and two body sections, and nearly all have four pairs of walking legs.
  • 15. Key Concept• Uniramians have jaws, one pair of antennae, and unbranched appendages.

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