bounding layer of bounding layer of material entity material entity organ organ part cortex UBERON:0001851 cortical Outermost layer of an organ[WP]. galen:Cortex this class is used more generically than in FMA, and includes e.g. cortex of hair cortex of organ EHDAA:9344 cortex FMA:61109 uberon Wikipedia:Cortex_(anatomy) EFO:0000383