The Eye

Target Language or Knowledge:

Use the diagram to answer the questions. Which structure is represented by the letter A on the eye diagram?
iris
Which structure is represented by the letter B on the eye diagram?
cornea
Which structure is represented by the letter C on the eye diagram?
pupil
Which structure is represented by the letter D on the eye diagram?
lens
Which structure is represented by the letter E on the eye diagram?
iris
Which structure is represented by the letter F on the eye diagram?
retina
Which structure is represented by the letter G on the eye diagram?
optic nerve
Specialized photoreceptor cells, known as rods and cones, are located in which part of the eye?
F
Which letter represents the clear part of the eye that covers the iris and pupil?
B
Which letter represents the muscle that controls the size of the pupil and therefore the amount of light entering the eye?
A
Fill the blanks below:
A transparent covering called the _cornea,_ focuses _light_ as it enters the eye. As light enters, it passes through a small opening known as the _pupil_ . The _iris,_ moved by iris _muscles,_ opens and closes this _hole_ to regulate the amount of _light_ entering the eye. The _lens_ refracts and _focuses_ light onto the back of the eye, where the _retina,_ with its rods and _cones,_ is located. Information gathered by the eye _transmits_ to the _brain_ via the _optic_ _nerve._