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Lesson 2.3 Flight Physiology - Key Terms

Key Terms

AIDAccident Incident Database produced by the FAA.
Blind SpotThe small circular area in the retina where the optic nerve enters the eye that is devoid of rods and cones and is insensitive to light.
ConeAny of the conical photosensitive receptor cells of the vertebrate retina that functions in color vision.
Depth PerceptionThe ability to judge the distance of objects and the spatial relationship of objects at different distances.
HypoxiaOccurs when the tissues in the body do not receive enough oxygen.
NTSBNational Transportation Safety Board.
Photopic VisionUse of color-sensitive cones for direct vision in good light.
PupilThe opening in the iris, which admits light into the interior of the vertebrate eye; muscles in the iris regulate its size.
RetinaThe sensory membrane that lines most of the large posterior chamber of the vertebrate eye; composed of several layers including one containing the rods and cones; functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve.
RodAny of the long rod-shaped photosensitive receptors in the retina that are responsive to faint light.

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