5.2.7

Eye Anatomy

Test yourself

Retina Scanning

Your retina is full of receptor cells, which are sensitive to both the brightness (light intensity) and the colour of light. Retina scanning looks at the pattern of blood vessels in your retina to identify you.

The Eye

The iris controls pupil diameter and the quantity of light reaching the retina. If there isn't much light then the iris will make our pupils dilate (get bigger).

Jump to other topics

1Cell Biology

2Organisation

2.1Principles of Organisation

2.2Enzymes

2.3Circulatory System

2.4Non-Communicable Diseases

2.5Plant Tissues, Organs & Systems

3Infection & Response

4Bioenergetics

5Homeostasis & Response

6Inheritance, Variation & Evolution

7Ecology

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