IB Biology C2.2 Definitions

This page contains our IB Biology definitions for C2.2. By learning each one of these definitions, you will fully cover the content for IB Biology 'Neural signalling'.

All Topic 2 Sub-topics (HL)A2.1: Origins of cells A2.2: Cell Structure (HL)A2.2: Further cell structure (HL)A2.3: Viruses B2.1: Membranes And Transport (HL)B2.1: Further membranes and transport B2.2: Organelles & Compartmentalisation (HL)B2.2: Further organelles B2.3: Cell Specialisation (HL)B2.3: Further cell specialisation (HL)C2.1: Chemical signalling C2.2: Neural Signalling (HL)C2.2: Further neural signalling D2.1: Cell Division (HL)D2.1: Cell cycle (HL)D2.2: Gene expression D2.3: Water Potential (HL)D2.3: Further water potential

cholinergic synapse

A synapse that uses acetylcholine as a neurotransmitter

neuron

A nervous system cell that carries electrical impulses from the brain to the body or vice versa

synapse

The junction between two neurons or between a neuron and receptor or effector cell

synaptic cleft

The space between two neurons or between a neuron and receptor or effector cell

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