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| 2 | the boundary between the outer and middle ears; also known as the eardrum | 
 
 
| 3 | the external ear consists of the ______ and the external acoustic meatus | 
 
 
| 4 | runs obliquely downward to link the middle ear cavity to the nasopharynx | 
 
 
| 5 | the three smallest bones in the body are known as the _______ | 
 
 
| 6 | a spiral, conical bony chamber in the ear | 
 
 
| 7 | communicates with the utricle anteriorly | 
 
 
| 8 | lies deep in the temporal bone behind the eye socket; provides a secure site for the delicate receptor machinery housed there | 
 
 
| 9 | the shell-shaped projection surrounding the opening of the external acoustic meatus | 
 
 
| 10 | a small, air filled, mucosa-lined cavity in the temporal bone; also known as the middle ear | 
 
 
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