Ear Cross Section

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11 Terms

1
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<ol start="82"><li><p>A_________</p></li></ol><p></p>

  1. A_________


Pinna (Visible outer ear; collects sound waves.)

2
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<ol start="83"><li><p>B___________</p></li></ol><p></p>

  1. B___________


Ossicles (Three tiny middle-ear bones: malleus, incus, and stapes.)

3
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<ol start="84"><li><p>C________</p></li></ol><p></p>

  1. C________


Semicircular canals (Help detect rotational movement and maintain balance.)

4
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<ol start="85"><li><p>D___________</p></li></ol><p></p>

  1. D___________


Oval window (Receives vibrations from the stapes and passes them into the inner ear.)

5
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<ol start="86"><li><p>E_________</p></li></ol><p></p>

  1. E_________


Cochlear nerve (Carries hearing information toward the brain.)

6
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<ol start="87"><li><p>F________</p></li></ol><p></p>

  1. F________


Cochlea (Spiral-shaped structure involved in hearing.)

7
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<ol start="88"><li><p>G________</p></li></ol><p></p>

  1. G________


Round window (Helps relieve pressure changes in the cochlea.)

8
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<ol start="89"><li><p>H___________</p></li></ol><p></p>

  1. H___________


External auditory meatus (Ear canal that carries sound toward the eardrum.)

9
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<ol start="90"><li><p>I__________</p></li></ol><p></p>

  1. I__________


Vestibule (Inner-ear region involved in balance and head position.)

10
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<ol start="91"><li><p>J__________</p></li></ol><p></p>

  1. J__________


Tympanic membrane (Eardrum; vibrates when sound waves reach it.)

11
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<ol start="92"><li><p>K__________</p></li></ol><p></p>

  1. K__________


Eustachian tube (Connects the middle ear to the throat region and helps equalize pressure.)