psychology chapter 4 fill in the blank

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relaxes, smaller, less

In bright light the iris __________, which makes the pupillary opening get _________ allowing _________ light waves to enter the eye.

lens, focuses

In bright light the iris relaxes, which makes the pupillary opening get smaller allowing less light waves to enter the eye. The light waves then pass through the _________, which further ___________ the light waves.

contracts, larger, more

In dim light the iris _________, which makes the pupillary opening get _________ allowing _________ light waves to enter the eye.

rods, black and white

The ________, located mainly in the periphery of the eye, change the light waves into electrical messages that the brain will perceive as _______________.

ciliary muscles, altering the shape

The _________________ which are attached to the lens changes the focal point by ________________ of the lens.

retina

The ciliary muscles which are attached to the lens changes the focal point by altering the shape of the lens. The light waves then strike the __________, which is the light sensitive layer of cells at the back of the eye.

transduction

The conversion of light waves into electrical messages is called ___________________.

optic nerve, occipital lobe, visual

The conversion of light waves into electrical messages is called transduction. The electrical message then travels over the _____________ to the ____________________ of the brain. This is the __________ center of the brain.

cornea, focuses

The light waves first pass through the __________, the clear outer covering of the eye which __________ the light waves

papillary opening, iris

The light waves first pass through the cornea, the clear outer covering of the eye which focuses the light waves. The light waves then pass through the _______________, the size of which is controlled by the ________.

cones, color vision

The light waves then strike the retina, which is the light sensitive layer of cells at the back of the eye. This layer contains two types of cells. The _________, located mainly in the center of the eye, change the light waves into electrical messages that the brain will perceive as ______________.


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