The External Acoustic Meatus Flashcards Preview

Spinal Anatomy I - Exam 3 > The External Acoustic Meatus > Flashcards

Flashcards in The External Acoustic Meatus Deck (8):
1

The external acoustic meatus lies between what boundaries?

concha of the auricle and the tympanic membrane of the middle ear

2

The lateral third of the external acoustic meatus is protected by what?

cartilage

3

What part of the medial external acoustic meatus is protected by bone?

the medial two thirds

4

Skin lining the external acoustic meatus contains what modified sebaceous glands?

ceruminous glands

5

What is cerumen?

the product of ceruminous glands forming the bulk of ear wax

6

Vascularization of the external acoustic meatus is derived from which branches of the external carotid artery?

- posterior auricular a.
- internal maxillary a.
- superficial temporal a.

7

Sensory innervation of the external acoustic meatus is accomplished by which C.N.?

- trigeminal
- vagus

8

Which specific branches of C.N. supply the external acoustic meatus?

- auriculotemporal n. (mandibular division, trigeminal)
- auricular n. (vagus)

Decks in Spinal Anatomy I - Exam 3 Class (94):