C3.1.5—Spinal cord
Spinal cord links named stimuli, coordinating structures and effectors so body systems or plant tissues produce an integrated biological response.
- Syllabus
- First assessment 2025
- Objective
- C3.1.5
- Level
- HL
Concept essentials
- Spinal cord depends on linking the stimulus to the coordinating structure or signal.
- The pathway for spinal cord must keep information flow and response direction clear.
- Named tissues, hormones, neurons or effectors give spinal cord its biological specificity.
- Evidence about spinal cord is strongest when structure, mechanism and outcome are connected.
ConceptIB Biology HL