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The autonomic nervous system

Dr Iain Phillips offers a revision of the autonomic innervation in readiness for future articles on the eye and pharmacological control

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The nervous system is made up of the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and spinal cord. Nerves distal to this system form the PNS. Peripheral nerves that conduct signals from the peripheries to the CNS can be described as afferent (sensory) nerves. Efferent (motor) nerves transmit signals from the CNS to target organs/tissues.

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