Quantcast Figure 1-6. Landmarks of right tympanic membrane. - Special Surgical Procedures

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
a. External Ear. The external ear consists of an auricle, or pinna, and an
external auditory meatus (a tube ending at the tympanic membrane or ear drum). The
auricle collects the sound vibrations in the air and sends them through the external
canal to the ear drum.
b. Tympanic Membrane. The tympanic membrane (see figure 1-6) is a tri-
layered membrane stretched across the end of the external meatus. The sound waves
come through the meatus and vibrate the membrane.
Figure 1-6. Landmarks of right tympanic membrane.
c. Middle Ear. Inside the tympanic membrane is a narrow, irregular, oblong,
air-conditioned cavity in the tympanic part of the temporal bone. This air-filled space
contains three small bones, which transfer the vibrations from the tympanic membrane
to the inner ear. Figure 1-7 shows the ossicles of the middle ear.
d. Inner Ear. The inner ear is a complex structure located in the petrous portion
of the temporal bone. It is made up of two distinct parts, each of which contains its own
kind of fluid. Sound vibrations carried by the bones of the inner ear are transferred by
way of the oval window to the fluid in the cochlea and received through a fine
membrane by the organ of Corti, the delicate neural end organ for sound. A second
function of the inner ear is the maintenance of balance, controlled by the movement of
fluid in the labyrinth in relation to neuroepithelial cells.
e. Temporal Bone. The temporal bone houses the middle and inner ear as well
as the mastoid sinuses.
MD0928
1-20



Medical News
Research evaluates neurodevelomental and medical outcomes in single family room NICU
The prevalence of preterm birth – the birth of an...
medicalxpress.com
E-cigarettes unhelpful in smoking cessation among cancer patients
In a new study of cancer patients who smoke, those...
medicalxpress.com
Mothers of children with autism less likely to have taken iron supplements
Mothers of children with autism are significantly less likely to...
medicalxpress.com
RT Regimens Preserve QOL in Prostate Ca
SAN FRANCISCO (MedPage Today) -- Almost 90% of men with...
medpagetoday.com
ADVANCE-ON: No Legacy Effect for Tight Sugar Control
VIENNA (MedPage Today) -- Tight glycemic control didn't reduce mortality...
medpagetoday.com
Dry roasting could help trigger peanut allergy
Dry roasted peanuts are more likely to trigger an allergy...
medicalxpress.com
Week Ahead: FDA and Kids, More Ebola
(MedPage Today) -- This week MedPage Today will report on...
medpagetoday.com
Overwhelmed west Africa escalates Ebola response
West Africa intensified its response to the deadly Ebola epidemic...
medicalxpress.com
Jobless and poor, Ghana's youth turn to selling blood
To Ghana's legions of jobless young men, Eric Bimpong has...
medicalxpress.com
Liberia to provide 1,000 Ebola beds in overwhelmed capital
Liberia announced plans Sunday for a four-fold increase in beds...
medicalxpress.com
Immune system of newborn babies is stronger than previously thought
Contrary to what was previously thought, newborn immune T cells...
medicalxpress.com
Cancer cells adapt energy needs to spread illness to other organs
Want to understand why cancer cells metastasize? Think of Sparta....
medicalxpress.com
Sierra Leone reaches final day of Ebola lockdown
Frustrated residents complained of food shortages in some neighborhoods of...
medicalxpress.com
How Much Does That X-Ray Cost? You Can Find Out in N.H.
(MedPage Today) -- New Hampshire is among 14 states that...
medpagetoday.com
Protocol Rapidly Transforms Stem Cells
(MedPage Today) -- A seven-stage protocol building on previous work...
medpagetoday.com
Guest Article: Endpoints for Studies of Ovarian Cancer (CME/CE)
(MedPage Today) -- Two gynecologic oncologists discuss the challenges involved...
medpagetoday.com
PodMed: A Medical News Roundup From Johns Hopkins (with audio)
(MedPage Today) -- This week's topics include Ebola face-to-face, the...
medpagetoday.com
Ig Nobel Winners, Bad News Sandwich: That's Improbable!
(MedPage Today) -- A weekly report from our friends at...
medpagetoday.com
Grand Roundup: Top posts for the week of Sept. 14
The five most-read stories this week on Scope were: So...
scopeblog.stanford.edu
Grand Roundup: Top posts for the week of Sept. 14
The five most-read stories this week on Scope were: So...
scopeblog.stanford.edu
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +