External features:
Make observations about the size, symmetry, colour and texture of your specimen.
Note the oral and aboral surfaces.
Find the madreporite & radial arms.
Find the tube feet & mouth.
Internal features:
Carefully cut two radial arms as shown...
Make observations about the internal features of our specimen - find the pyloric ceaca, gonads, ampulla, tube feet.
Cut around the central disc of the aboral surface and try to find the pyloric and/or cardiac stomach.
What were you surprised by with this dissection? What other questions do you have now?
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