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5 Cards in this Set

  • Front
  • Back
Closed Circulatory System
a circulatory system in which the heart ciculates blood through a network of vessels that form a closed loop; the blood does not leave the blood vessels, and materials diffuse across the walls of the vessels.
open circulatory system
a circulatory system in which the circulatory fluid is not contained entirely within vessels; a heart pumps fluid through vessels that empty into spaces called sinuses
3 main body parts of an arthropod
head, thorax, abdomen
relationship between parasite & and host
parasite lives off host
4 characteristics of arthopods
A segmented body with specialized parts, joined limbs, an exoskeleton, and a well developed nervous system