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Santiago Ramon y Cajal drawing of a frog's spinal cord.
The Spanish neuroanatomist Santiago Ramon y Cajal first proposed that the brain cell (or neuron) was the structural unit of the nervous system. Our brains contain roughly 100 billion neurons which work together to produce our waking and dreaming states of consciousness.
The Spanish neuroanatomist Santiago Ramon y Cajal first proposed that the brain cell (or neuron) was the structural unit of the nervous system. Our brains contain roughly 100 billion neurons which work together to produce our waking and dreaming states of consciousness.
