Question

Trace the sequence of events that occur when a bright light is focused on your eyes

Answer 1

Events when a bright light is focused on your eyes:

1. When a strong light shines into our eyes, the receptor cell takes the information and sends it to the sensory neuron, which then sends it to the brain, where it is reverted by a motor neuron, which closes the pupil.
2. When strong light is focused on the eyes, the chain of events begins with the receptor, which transmits impulses to the sensory neuron, which sends them to the brain.
3. The impulse passes from the brain to the eye through the motor neuron, specifically the ocular muscles, which contract in response.
4. The iris controls the diameter and size of the pupil, which governs the quantity of light entering the eyes.