This is a lengthy photo of the spinal cord.
This is the Brain attached to the spinal cord.
Senses are physiological capacities of organisms that provide data for perception.
Sensory receptors are primarily classified as chemoreceptors, thermoreceptors, mechanoreceptors, or photoreceptors. Read more about classification of receptors by stimulus in the Boundless open textbo
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How fast do you think you are? Do you know what a reflex and a reaction are? This lesson plan tells all about the quickness of your nervous system and the muscular system, which the nervous system in