Organisation and maintenance of organisms - receptors and senses: the eye as a sense organ

7 important questions on Organisation and maintenance of organisms - receptors and senses: the eye as a sense organ

What is the function of a receptor?

It detects changes in the enviroment.

What is a sense organ?

Grouped receptor cells with other tissue cells.

Which 3 things does an eye need to function properely.

1 receptors (rod and cone cells on the retina)
2 systems for making the most of the light stimulus (lens and the irus)
3 its own blood supply and physical protection (choroid and the sclera)
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Which part of the eye controls the light intensity?

The iris changes the size pupil

What is the function of the cornea?

Refracting (bending) light rays that enter the eye

What 3 parts of the eye control light focusing on the retina?

1 ciliary muscle
2 suspensory ligament
3 lens

What is the yellow spot in the eye?

The area that has the highest density of cones

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