Biol 36
Chris Gillen
Lecture outline 19

Review and preview

• where have we been?
• where are we going?

The arthropods

• classification
  • Trilobitomorpha
  • Cheliceriformes
  • Uniramia
  • Crustacea
• considerable controversy regarding phylogenetics
• Features of the arthropods
• The arthropod bauplan
  • segmentation
  • Exoskeleton - cuticle
    • structure
    • functions
    • locomotion
    • consequences for overall body plan
• appendages
• the hemocoel
• circulation
• respiration
• excretion

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