UNIT 6 THE HUMAN BODY
Figure 18.12: Use the diagram
above to answer question 2.18.2 Section Review
- Match the parts of the eye to their functions:
- Match the structures in question 1 to the letters on the
diagram in Figure 18.12. - Fill in the table below:
- What is color blindness? Why is it more common in males than
in females?
Structure Function- iris a. hole through which light enters
- cornea b. opens or closes to change the pupil
- lens c. respond to light intensity
- retina d. convert light into nerve impulses
- photoreceptors e. refracts light and can change shape
- optic nerve f. refracts light and helps the lens focus
- rod cells g. respond to color
- pupil h. sends nerve impulses to the brain
- cone cells h. inner surface where light rays land
Colors of light mixed Color you see
red + green
red + blue
green + blue
red + green + blue