Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/7

Click to flip

7 Cards in this Set

  • Front
  • Back
FACIAL NERVE

CHORDA TYMPANI

-facial nerve: exit skull
a. The chorda tympani nerve enters the tympanic cavity through a pos-
terior canaliculus and courses anteriorly on the medial surface of the
superior part of the manubrium, superior to the insertion of tensor
tympani; it then exits the tympanic cavity through an anterior canali-
culus and emerges from the skull through the petrotympanic fissure
to join the lingual nerve

b. The chorda tympani nerve contains preganglionic parasympathetic
fibers from the superior salivatory nucleus in the brainstem as well
as taste fibers for the anterior two-thirds of the tongue

5. The facial nerve exits the skull through the stylomastoid foramen
CC

INFECTION OF MIDDLE EAR
F. Clinical notes

1. Infection of the middle ear, otitis media, often spreads to the tympanic
cavity from the nasopharynx via the auditory tube; from the tympanic
cavity it may spread through the aditus ad antrum into the mastoid an-
trum and mastoid air cells
CC

TYM. CAVITY
VS.
INTERNAL JUGULAR VEIN
F. Clinical notes

2. Because of the close relationship of the tympanic cavity to the internal
jugular vein, internal carotid artery, and subarachnoid space, skull frac-
tures involving the petrous part of the temporal bone may result in leak-
age of blood or cerebrospinal fluid into the tympanic cavity
CC

OTOSCLEROSIS
F. Clinical notes

3. Otosclerosis is a condition in which there is hearing loss as a result of
ossification of the annular ligament and fixation of the stapes within the
oval window; hearing is sometimes restored by surgically replacing the
stapes with a prosthesis
INNER EAR

-location
-consists of
III. Inner (Internal) Ear

A. Located within the petrous part of the temporal bone, medial to the middle
ear; subserves the functions of balance and hearing

B. Consists of a series of membranous and bony chambers comprising the
membranous and bony labyrinths, respectively
INNER EAR

MEMBRANOUS LABYRINTH
1. The membranous labyrinth is filled with endolymph and is housed within the bony labyrinth; the membranous and bony labyrinths are separated
by a perilymphatic space filled with perilymph
INNER EAR

STRUCTURES VS.
MEMBRANOUS LABYRINTH
2. Structures comprising the membranous labyrinth include the utricle,
saccule, three semicircular ducts, and a cochlear duct; structures com-
prising the bony labyrinth include the vestibule, three semicircular
canals, and the scala vestibuli and scala tympani