contributes to morphology of Ammon's horn hippocampal field CA1 field of hippocampus CA1 field of hippocampus DMBA:16131 field CA1, Ammon's horn (Lorente de Ns) CA1 MA:0000950 MBA:382 region i of ammon's horn CA1 field of cornu ammonis BAMS:CA1 EFO:0002454 region CA1 regio superior of the hippocampus region 1 of Ammon's horn NCIT:C32246 Part of hippocampus proper bounded by CA2 and the subiculum, characterized by pyramidal neurons that receive projections from pyramidal neurons of CA3 via the Schaffer collaterals. Wikipedia:Region_I_of_hippocampus_proper field CA1 field CA1 of hippocampus cornu ammonis 1 HBA:12892 CA1 field of Ammon's horn EMAPA:32768 BIRNLEX:1197 UBERON:0003881 hippocampus CA1 PBA:10058 region i of hippocampus proper regio superior CA1 field CA1 field of the Ammon horn prosubiculum = distal ca1 DHBA:10297 FMA:74042