Number the following structures (1-9) to indicate their respective positions in relation to the pathway of the sound vibrations. Assign number 1 to the most superficial portion of the outer ear. 1. Auricle (air vibrations within)
2. External acoustic meatus (air vibrations within)
3. Basilar membrane of spiral organ within cochlea
4. Hair cells of spiral organ
5. Incus
6. Malleus
7. Oval window
8. Stapes
9. Tympanic membrane