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Anatomy and physiology of ageing 5: the nervous system | Practice

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In this article…

  • Age-related changes to the central and peripheral nervous systems
  • How age affects the functioning of the brain
  • Common problems caused by nervous system changes in older people


John Knight is senior lecturer in biomedical science; Yamni Nigam is associate professor in biomedical science, both at the College of Human Health and Science, Swansea University.


The nervous system controls the activities of all body organs and tissues, receiving input from sensory organs and responding via effector organs. With around 100¬†billion interconnected neurons, the brain is an extremely complex, and still poorly understood, organ. However we do understand, to some degree, how age affects it, as well as the nervous system as a whole. This fifth article in our series on the anatomy and physiology of ageing…

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