The amount of light entering the eye is controlled by a reflex action. The size of the pupil changes in response to bright or dim light. This is controlled by the muscles of the iris.

The oculomotor system consists of interconnected regions throughout the central nervous system that interact to control various eye movements. It includes different brainstem nuclei, the superior ...

The questions in this quiz are suitable for GCSE biology students studying homeostasis, the nervous system, the reflex arc, the brain and the eye. If you struggled with the quiz, don't panic - we ...

Dementia is one of the leading causes of death in the world with millions of patients affected by a disease that is currently ...

The nervous system consists of the central nervous system (brain and spinal cord) and the peripheral nervous system (motor nerves, sensory nerves, cranial and spinal nerves, autonomic ganglia ...