Labels:earth | sky | tree OCR: INSIDE A NER VE NDIVIDUAL NERVE FIBRES outer layer, called myelin. which or axons are held together in allows impulses to travel quickly. parallel bundles. Each fibre carries Each fibre bundle IS held together nerve impulses from the nucleus by protective sheath and joins ofa nerve cell. Most have white with other bundles to form nerve Nerve fibre (axon) Outer sheath of bundle
