Complement of nervous tissue (neurones, nerves, receptors and support cells) serving to detect, relay and coordinate information about an animal`s internal and external environments and to initiate and integrate its effector responses and activities. |
nervous system
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WBbt:0005735
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the feeding organ, a neuro-muscular pump in the head of the animal, used to ingest food, bacteria suspended in liquid, filter them out, grind them up and transport posteriorly into the instestine. |
pharynx
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esophagus |
WBbt:0003681
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neuron with its cell body situated in the head, excluding the pharynx. |
head neuron
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WBbt:0006751
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the most extensive region of neuropil in the animal, consists of a large toroidal bundle of processes. |
nerve ring
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circumpharyngeal nerve ring |
WBbt:0006749
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