Q2) Which option correctly shows the order of events when a bright light is focused on our eyes? (a) Bright light → receptors in eyes → sensory neuronàspinal cord → motor neurons → eyelid closes (b) Bright light → receptors in eyes → spinal cord → sensory neuron → motor neurons → eyelid closes (c) Bright light → receptors in eyes → sensory neuron → motor neurons → spinal cord → eyelid closes (d) Bright light → receptors in eyes → spinal cordà motor neurons → sensory neuron → eyelid closes
The sequence of events that occur is: Receptor → Sensory neuron → Brain → Motor neuron → Eye → Eye muscle contracts. The iris regulates the amount of light entering the eyes by controlling the diameter and size of the pupil.
