In some cases, these nerves are very small, but some nerve bundles are so large that they can be seen by the human eye. The ...

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.

You look straight ahead and cover one eye, the physician then waves a finger from the side of your head to the middle. The autonomic nervous system controls your body's vital functions ...

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 ...

The nervous system is a complex network of neurons and cells that carry messages to and from the brain and spinal cord to various parts of the body. In a new case study, researchers from North ...

Based on the examination, the problem can be traced to, for example, a specific area of the brain, the peripheral nervous system or part of the spine. Any necessary further investigations are then ...