Which of the following attains adult size before birth?
Ans is 'a' i.e. Ear Ossicles Its an indirect repeat from May 2009 paper."The tympanic cavity and mastoid antrum, auditory ossicles, and structures of the internal ear are all almost fully developed at birth and subsequently alter little. " -Gray's 40/e p623
Ear Ossicles
Maxilla
Mastoid Process
Parietal bone