Thursday, February 9, 2012
Tuesday, January 24, 2012
Want to Learn More About Echinoderms?
Click here! for informative powerpoint elaborating about all Echinoderms
Monday, January 23, 2012
Dissecting Echinoderms! part 2
Making an incision into the urchin...
The urchin's innards are exposed, with the teeth and stomach spilling out.
The urchin's innards are exposed, with the teeth and stomach spilling out.
Dissecting Echinoderms!
Oral Side of starfish ^
aboral side of starfish^Starfish
Asterias rubens
~skeletal plates(ossicles)- provide structure and allow movement, acting as joints
~ampulla-muscular tissue structure that controls the water in the foot and squeezes it out
~pyloric caecum- helps the digestion through absorption.
~pyloric stomach- connects digestive glands
~tube feet-they help the starfish move with suction cups
Video 3
http://www.youtube.com/watch?v=qQrt642LPa8
This video talks about the classification of the phylum Echinodermata as a whole.
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