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प्रश्न
Answer the following question.
Trace the sequence of events Whichoccur when a bright light is focused on your eyes.
उत्तर
When a bright light is focussed on our eyes, then it goes to the brain, the brain reverts back the message by motor neuron which contracts the pupil.
The sequence of events which occur is:
Receptor → Sensory neuron → Brain → Motor Neuron → Eye → Eyemusclecontracts.
संबंधित प्रश्न
Differentiate between: Rods and cones
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
Name the cells on the retina of an eye which are sensitive to (i) bright light (ii) dim light (iii) sensation of colour.
An object is moved closer to an eye. What changes must take place in the eye in order to keep the image in sharp focus?
Mention, where in living organism is the following located and state their main function:
Fovea centralis
With reference to the functioning of the eye, answer the question that follow:
Name the two structure in the eye responsible for bringing about the change in the shape of the lens.
State the Function:
Iris
Choose the Odd One Out:
Match the following:
|
Column - I |
Column - II | ||
| 1 | Retina | a | Path way of light |
| 2 | Pupil | b |
far point comes closer |
| 3 | Ciliary muscles | c |
near point moves away |
| 4 | Myopia | d | Screen of the eye |
| 5 | Hypermetropia | e | Power of accommodation |
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the shape of lens.
