part_of part of part of has part has part has_part cell cell anatomical entity nervous system brain NCIT:C12439 DHBA:10155 GAID:571 EMAPA:16894 BTO:0000142 MESH:D001921 EHDAA:6485 CALOHA:TS-0095 VHOG:0000157 EHDAA2:0000183 XAO:0000010 BAMS:Brain Wikipedia:Brain FMA:50801 MBA:997 SCTID:258335003 EHDAA:2641 BAMS:Br galen:Brain TAO:0000008 MBA:8 BILA:0000135 EV:0100164 EFO:0000302 HBA:4005 MAT:0000098 This term is considered as a synonym of cephalic ganglia, however, brain is generalizable term. UMLS:C0006104 PBA:3999 ABA:Brain FBbt:00005095 ZFA:0000008 The brain is the center of the nervous system in all vertebrate, and most invertebrate, animals. Some primitive animals such as jellyfish and starfish have a decentralized nervous system without a brain, while sponges lack any nervous system at all. In vertebrates, the brain is located in the head, protected by the skull and close to the primary sensory apparatus of vision, hearing, balance, taste, and smell[WP]. MIAA:0000098 AAO:0010478 neuronames:21 BIRNLEX:796 UMLS:C1269537 MA:0000168