part_of part of part of head bone element cranium craniocervical region pterosphenoid UBERON:2000419 Endochondral bone that sutures with the orbitosphenoid anteriorly, the frontal bone dorsally and the sphenotic and prootic posteriorly. The pterosphenoid forms part of the orbitosphenoid region. The pterosphenoid bears foramina that accommodate branches of the trigeminal and facial nerves. The pterosphenoid is a paired bone. pterosphenoids alisphenoid This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon ZFA:0000419 zebrafish component