2.91: Describe the Structure and Function of the Eye as a Receptor

EYE: Sense organ that contains light-sensitive Receptors that enable vision

Diagram:

Diagram showing the Structure of the Eye

STRUCTURE:

STRUCTURE	EXPLANATION
CORNEA	Transparent convex lens that refracts light
IRIS	Pigmented membrane that controls the diameter and size of Pupil to alter the quantity of light reaching the Retina
LENS	Transparent disc that changes shape to focus light onto the Retina
RETINA	Light-sensitive nerve tissue containing Rods (night vision) and Cones (colour vision) to convert light into electrical impulses to be interpreted by the brain for visual recognition
OPTIC NERVE	Nerve located in the back of the eye that contains Sensory Neurons to send electrical impulses to be interpreted by the brain for visual recognition
PUPIL	Opening in the centre of Iris that allows light to enter the Eye
CILIARY MUSCLES	Circular muscle surrounding the lens that that contracts and relaxes to adjust the thickness of lens