Planarian with a stained gut

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A whole planarian (phylum Platyhelminthes, class Turbellaria, genus Planaria).  The head is visible at the left, most notably the ocelli (eye spots) and auricles (triangular outgrowths from the head).  In the center of the body is the pharynx, a long tubular structure that is extended from the body to feed.  The pharynx connects to the gastrovascular cavity, a blind-ended gut, that in this individual has been filled with black ink.  By filling the gut with ink we can see that the gastrovascular cavity extends throughout the flatworm's body.  Seen at approximately 40x magnification.
A whole planarian (phylum Platyhelminthes, class Turbellaria, genus Planaria). The head is visible at the left, most notably the ocelli (eye spots) and auricles (triangular outgrowths from the head). In the center of the body is the pharynx, a long tubular structure that is extended from the body to feed. The pharynx connects to the gastrovascular cavity, a blind-ended gut, that in this individual has been filled with black ink. By filling the gut with ink we can see that the...
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Keywords:
  • Marc Perkins
  • OCC
  • Platyhelminthes
  • animal
  • eye
  • flatworm
  • gastrovascular cavity
  • gut
  • microscope
  • pharynx
  • preserved
  • slide
  • stained
  • zoology