auditory bulla
A hollow bony structure on the ventral, posterior portion of the skull of placental mammals that encloses parts of the middle and inner ear. In most species, it is formed by the tympanic part of the temporal bone. [ http://en.wikipedia.org/wiki/Auditory_bulla ]
Term info
auditory bulla
http://upload.wikimedia.org/wikipedia/commons/a/af/Toothed_whale_sound_production.png
may be formed from entotympanic and ectotympanic
bulla
sigmoid process
uberon
tympanic bulla, bulla tympanica, auditory bullae
UBERON:0008959
In extant primates, the structure is found in tarsiers, lemurs, and lorises[WP]. When present in marsupials, it usually forms the alisphenoid; in placentals variously constructed of ectotympanic, entotympanic, petrosal, or a combination of these and others
Term relations
- bony projection
- surrounds some tympanic cavity
- part of some ear
- part of some dermatocranium