part of part of neuron projection bundle internal arcuate fiber bundle MBA:396 BAMS:ia internal arcuate tract HBA:265505610 Internal arcuate fibers are the axons of second-order neurons contained within the gracile and cuneate nuclei of the medulla oblongata. These fibers cross from one side of the medulla to the other to form the medial lemniscus. Part of the dorsal column-medial lemniscus system (second neuron), the internal arcuate fibers are important for relaying the sensation of fine touch and proprioception to the thalamus and ultimately to the cerebral cortex. UMLS:C0228533 Wikipedia:Internal_arcuate_fibers internal arcuate fibers fibrae arcuatae internae fibre arciformes olivares BAMS:iaf neuronames:795 internal arcuate fibres arcuate fibers medial lemniscus arcuate fibers (medial lemniscus) FMA:72629 fibre arciformes sensibiles BIRNLEX:1091 DHBA:12756 UBERON:0006087 central nervous system cell part cluster white matter of medulla oblongata