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Chapter 13. Anatomy of the Ear

Development of the membranous portion of the inner ear is complete by which embryologic time frame?

A. Week 8

B. Week 15

C. Week 28

D. Week 34

Which of the following nerves does not innervate the middle ear?

A. V3

B. IX

C. X

D. VII

Which structure may be responsible for the spread of infection from the middle ear to the subarachnoid space in infants?

A. Huguier canal

B. Petrotympanic fissure

C. Hyrtl fissure

D. Foramen of Huschke

Normal development of the auricle with external canal atresia suggests a developmental abnormality during which embryologic time frame?

A. Week 8

B. Week 28

C. Week 14

D. Week 34

Which of the following attaches to the mastoid process?

A. Sternocleidomastoid

B. Splenius capitis

C. Longissimus capitis

D. Digastric

E. All of the above

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