The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.
any structural anomaly of the dense, pyramid-shaped portion of the temporal bone that is wedged in at the base of the skull between the sphenoid and occipital bones; directed medially, forward, and a little upward, it presents a base, an apex, three surfaces, and three angles, and houses in its interior, the components of the inner ear; the petrous portion is among the most basal elements of the skull and forms part of the endocranium
Synonyms:
exact_synonym:
abnormal pars petrosa (os temporale) morphology; abnormal pars petrosa ossis temporalis morphology; abnormal petrosal bone morphology; abnormal petrous bone morphology; abnormal petrous temporal bone morphology