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IB Biology C3.1.5 Spinal cord

IB Biology C3.1.5 Spinal cord
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise the spinal cord as part of the CNS and its role in reflex pathways, sensory signalling and movement control questions.

How this is tested

  • state that the CNS includes both the brain and spinal cord when prompted
  • apply reflex pathway evidence to locate synapses within the spinal cord
  • interpret damage scenarios linking sensory input, motor output and movement loss
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