Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 32

Upon entering the eye, light waves pass first through a curved, thin, transparent structure called the (a) _____ , whose function is to bend or focus light waves into a narrower beam. Next, light waves pass through an opening in the eye called the (b) _____ Around this opening is a circular, pigmented muscle called the (c) _____ ; its function is to dilate or constrict, thus increasing or decreasing the amount of entering light. Finally, light waves pass through a transparent, oval structure called the (d) _____ , whose function is to further focus light waves precisely on the photosensitive back surface of the eye, which is called the (e) _____