Question

categorise the following parts under 1-external 2-middle 3-internal ears

Answer 1

Explanation:

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The cavity of the middle ear is a narrow air-filled space. A slight constriction divides it into an upper and a lower chamber, the tympanum (tympanic cavity) proper below and the epitympanum above. These chambers are also referred to as the atrium and the attic, respectively. The middle-ear space roughly resembles a rectangular room with four walls, a floor, and a ceiling. The outer (lateral) wall of the middle-ear space is formed by the tympanic membrane. The ceiling (superior wall) is a thin plate of bone that separates the middle-ear cavity from the cranial cavity and brain above.

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Answer 2

Answer:

1}external ear -ear drum,pinna tympanum.

2}middle ear -hammer,anvil,stirrup,oval window.

3}internal ear - cochlea, semicircular canals