from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The bony or cartilaginous portion of the upper hyoid arch in some fish
Sorry, no etymologies found.
In the transition to life on land, the hyomandibula loses these functions and the bone becomes available for an eventual role in hearing.
In humans, as in other mammals, the hyomandibula, or stapes, is one of the tiny bones in the middle ear.
Other adaptations include a flattened head, elongated snout, and reduction of the hyomandibula, a bone that in fish corridinates movement between the braincase, pallete, and gills.
The hyomandibula later evolved into a structure associated with hearing in mammals.