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Cerebral ganglion
The earthworm’s ‘brain’. Earthworms have a simple nervous system. The cerebral ganglion is connected to a ventral nerve cord that runs the length of the body. Each segment is connected to this cord, allowing earthworms to move and respond to light, touch, chemicals, vibrations and more.
Acknowledgement: Sara L Roggemann, Three Flowers Photography
Rights: Sara L Roggemann, Three Flowers Photography
Published:12 June 2012Size: 35.89 KB