Introduction: The structural correlates of nerve cell function are being studied in the early-evolved coelenterate, Hydra. The studies rely on immunocytochemistry.
CNS Brain and spinal cord Brain = two cerebral hemispheres, brainstem, cerebellum, Diencephalon = thalamus/hypothalamus/pituitary Spinal cord = ascending.
The small molecule neurotransmitters Acetylcholine glutamate GABA glycine
