W21-L7: Ear and Auditory Tube Flashcards Preview

Matt's Block 06 - Neuro block > W21-L7: Ear and Auditory Tube > Flashcards

Flashcards in W21-L7: Ear and Auditory Tube Deck (18):
1

What is the role of the auricle?

collects sound

2

What is the lateral 1/3 of the external acoustic meatus and what is the medial 2/3?

Lateral 1/3=Cartilagenous

Medial 2/3= Temporal bone

3

What nerve innervates the posteroinferior surface of the external acoustic meatus?

Vagus

4

What nerve innervates the anterosuperior surface of the external acoustic meatus and external surface of tympanic membrane?

Auriculotemporal nerve (V3)

5

What shape is the external surface of the tympanic membrane?

Concaved

6

Where is the cone of light on the external surface of the tympanic membrane?

Anterio-inferior

7

Where is the Epitympanic recess and where does it go?

Superior to tympanic membrane, connects to mastoid air cells

8

Where is the tympanic cavity proper?

Directly medial to the tympanic membrane

9

What are the ossicles called?

Stapes, Incus and Malleus

10

What muscle is on the anterior aspect of the medial wall of middle ear?

Tensor Tympani (CN V)

11

What does the tensor tympani attach to?

Malleus

12

What muscle is on the posterior aspect of the medial wall of middle ear?

Stapedius muscle (CN VII)

13

What does the Stapedius muscle attach to?

Stapes

14

What is the bony labyrinth filled with?

Peri-lymph

15

What is the Membranous labyrinth filled with?

endolymph

16

What are the there semi-circular ducts?

Anterior, Horizontal and Posterior

17

Where are the ampulla situated and what do they sense?

Base of the semi-circular ducts which sense dynamic changes in equilibrium

18

Where are high frequency's represented on the cochlear duct?

Base, low frequency at the apex

Decks in Matt's Block 06 - Neuro block Class (48):