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Lostsunrise [7]
2 years ago
13

The boundary between the external and middle ear is

Medicine
2 answers:
iVinArrow [24]2 years ago
5 0
Tympanic membrane which is also known as the eardrum separates the outer ear from the middle ear! Hope this helps :)
kramer2 years ago
3 0

Answer:

the boundary between them is 15 cm

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