The gaps between two adjacent myelin sheaths along an axon are called

1. Myelinated nerve fibres are enveloped by Schwann cells. 2. Those cells form a myelin sheath around the axon. 3. The gaps between two adjacent myelin sheaths are called nodes of Ranvier. 4. A synaptic cleft is the gap between two neurons, which is a different structure entirely. _Source: syllabus Biology Ch18 'Neural Control and Coordination', section 18.3_