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called craniosacral outflow depending upon their origin.

Topic 3 Sensory Reception and Processing

The sensory organs (receptors) enable us to detect all types of changes in the
environment and send appropriate signals to the CNS, where all the inputs are
processed and analysed. Signals are then sent to different centres of the brain.
The most complex sensory receptors consist of numerous sense cells, sensory
neurons and associated accessory structures. For example, eye (sensory organ
for vision) and the ear (sensory organ for hearing).

Eye
The organ of sight are a pair of eyes in human.
Position
The eyes are situated in the deep protective bony cavities, called the orbits or
eye sockets of the skull.