Examlex
Since the central nervous system is so important to the proper functioning of the body, the brain is protected by the ________ and the spinal cord is protected by the ________.
Light Rays
Streams of photons that move in a straight line, visible to the human eye when they strike an object and are reflected.
Lens
A piece of transparent material, usually glass or plastic, that refracts or focuses light rays, used in glasses and optical instruments.
Critical Periods
Specific times during early development when the organism is particularly sensitive to certain environmental stimuli, which can have a lasting effect on later development.
Sensory Adaptation
The adjustment of sensory receptors to the level of stimulation they are exposed to, leading to decreased sensitivity with constant exposure.
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