Question #642
Which of the following statements is correct regarding the external auditory meatus?
The external acoustic meatus is orientated anteromedially with the inner two thirds bony while the outer third is cartilaginous and continuous with the auricle. It is approximately 3cm long in adults.
Medially it provides a bony attachment for the tympanic membrane.
It receives its sensory innervation from three separate cranial nerves: the auricular branch of the vagus nerve, the auricular branch of the auriculotemporal nerve (V3) and the facial nerve.
It is 3cm long in adults.