The eye as a sense organ

6)This is the videos we have found of the Pupil Reflex.  the propuse of pupil is to control the amount of light entering to the retina.

6)2) this is our flow chart

BRIGHT LIGHT—–  CONES IN RETINA—– BRAIN—–MUSCLE IN THE IRIS

stimulus                          receptor                             coordinator                  effector

the effect: circular contracts and radial relaxes, they are antagonic muscles.