Effects of removal and regeneration of the suprapharyngeal ganglion on learning, retention, extinction and negative movements of Lumbricus terrestris were studied in a T maze with electrical punishment and a sandpaper cue at the incorrect side and a dark goal box at the correct side. Learning, retention and negative movements at the choice point were not affected by ganglionectomy or regeneration. Extinction was prolonged, and negative reactions to the sandpaper were increased, by ganglionectomy after training. Negative movements in the maze stem were decreased by ganglionectomy under both learning and extinction conditions, and increased abruptly after 30--50 days of postoperative training. Reactivity to shock decreased when ganglionectomy followed, but not when it preceded, learning. Frequency of correct turns was the only measure clearly changed by learning. Negative movements at the choice point tended to decrease, but inconsistently during learning. There was no evidence that discrimination of sandpaper contributed to learning. Ten trials per day produced fatigue but was not detrimental to health or vigor.
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The Brain or Ganglia of an earthworm helps carry out all of the earthworm's body functions such as movement... similar to humans.
The function of an earthworm's nephridium is to excrete wastes from the earthworm's body.
The earthworm doesn't have a brain per see, but its nervous system features a brain like pair of cerebral ganglia which is located above and in front of the pharynx.
It't the Ganglia (brain)
you can find the ganglia under the pharynx and another pair of ganglia above the pharynx
it acts as a heart for an earthworm.... <3
the brain is essential for the movement of the earthworm. If the brain of the earthworm is removed, the earthworm will move continuously without stop
An earthworm has a paired brain attach to it nerve cord, that flows to its ganglia. The Clitellum ( the ring or band on the worm) is were the worm senses things. An earthworm can also not feel pain.
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The Ganglia is a part of the nervous systemThe Ganglia is a mass of nerve tissue existing outside the central nervous system.To make a long story short it's a brain.
Ganglia are nerve clusters. I don't know if flatworms have them or not; if they do, they probably function more or less like a rudimentary brain.