Why do the pupils dilate when you are excited?

Answer 1

Pupils dilate to allow more light to fall of the back of the retina. Pupils typically dilate in low light conditions, during states of sympathetic nervous system stimulation, and in response to a number of nervous system stimulant drugs and hallucinogenic drugs.

Answer 2

Your pupils will dilate when you are in a dark environment, so as to let in more light for you to see by. Likewise, the constrict in bright environments to keep out all of the bright light.

Also, when you see something appealing, your pupils will dilate to let in light so you can see it better.

Answer 3

WHen you are excited you engage the sypmathetic Nervous system,your fight or flght part of the PNS. This part of the nervous system that increases the heart rate turns off the digestive system sends more blood to skeletal muscle for movement and dilates pupils so you can see if you need to fight or run.

Answer 4

The pupil constricts and dilates in response to the amount of light.
The pupil or the black circle in the middle of the eye is actually an opening which allows light into the eye. The light is then sensed by the light sensory cells at the back of the eye. The pupils dilate (get bigger) when there is not as much light. The Iris or ring of colour around the eye is made up of muscle tissue that expands or contracts in reaction to the amount of light, so increasing or decreasing the size of the pupil.

Answer 5

Certain drugs are said to dilate the pupils, as can the change of lighting. (e.g. going from the sun into a dark room)

Answer 6

so that our eyes will get used to the light . if the pupil is too large with too much light then that could damage our eyes.

Answer 7

to let in more or less light