Ear Flashcards Preview

Gross Anatomy Exam 4 > Ear > Flashcards

Flashcards in Ear Deck (15):
1

Parts of external ear

1. Auricle (pinna)
2. External acoustic meatus (ear canal)
3. Cartilages

2

Parts of auricle (pinna)

1. Marginal cutaneous sac
2. Tragus

3

3 cc. of ear

1. Auricular c.
2. Annular c.
3. Scutiform c.

4

Scutiform c. is interposed in?

Auricular mm.

5

Parts of middle ear

1. Tympanic membrane (eardum)
2. Tympanic cavity
3. Petrous temporal b. (medial wall)

6

Parts of petrous temporal bone

1. Vestibular window (oval)
2. Cochlear window (round)
3. Promontory

7

Vestibular window is covered by?

Stapes

8

Cochlear window is closed by?

Secondary tympanic membrane (connects to cochlear cavity)

9

Which window is dorsal?

Vestibular window

10

What is the promontory?

Bulge of medial wall over cochlea ventral to both windows

11

3 auditory ossicles of the middle ear

1. Malleus (hammer)
2. Incus (anvil)
3. Stapes (stirrup)

12

Parts of malleus

1. Manubrium attached to tympanic membrane
2. Head articulating with incus
3. Tensor tympani m.

13

Stapes

Attaches to vestibular window, has stapedius m.

14

Bony labyrinth of inner ear

1. Vestibule
2. Semicircular canals
3. Cochlea

→ filled with perilymph

15

Membranous labyrinth of inner ear

1. Utricle and semicircular ducts
2. Saccule and cochlear ducts

→ filled with endolymph