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
High dietary salt may worsen multiple sclerosis symptoms
High dietary salt intake may worsen multiple sclerosis symptoms and...
medicalxpress.com
Plain cigarette packs don't hurt small retailers or boost trade in illicit tobacco
Plain packs for tobacco products don't hurt small retailers, flood...
medicalxpress.com
New model predicts patients with type 1 diabetes who will go on to develop major complications
New research published in Diabetologia (the journal of the European...
medicalxpress.com
Video game accessory may help multiple sclerosis patients reduce falls, boost brain connections
Nintendo’s Wii Balance Board has helped get people off the...
scopeblog.stanford.edu
Study finds shortcomings in doctor-patient discussions about transplantation
In a study of dialysis patients, those who reported that...
medicalxpress.com
Molecular method classifies patients with polycythemia vera
(HealthDay)—Patients with polycythemia vera can be classified according to disease...
medicalxpress.com
Guidelines presented for diagnosing focal liver lesions
(HealthDay)—Focal liver lesions (FLLs) are mostly benign, and can be...
medicalxpress.com
Donated livers not harmed by travel distances, study finds
(HealthDay)— Transporting donated livers long distances does not affect the...
medicalxpress.com
CDC: Toddlers' Vaccine Coverage Holds Steady
(MedPage Today) -- Most childhood vaccination rates appeared stable in...
medpagetoday.com
Sensory deficits common in patients with multiple myeloma
(HealthDay)—Treatment-naive patients with multiple myeloma (MM) frequently have sensory deficits,...
medicalxpress.com
African-Americans have worse cervical spine surgery outcomes
(HealthDay)—African-American patients have significantly higher rates of in-hospital complications and...
medicalxpress.com
Most US babies get their vaccines, CDC says
(HealthDay)—The vast majority of American babies are getting the vaccines...
medicalxpress.com
Deadly remedy: Warning issued about Chinese herbal medicine
A herbal preparation prescribed by a Chinese herbal medication practitioner...
medicalxpress.com
Are cigarette substitutes a safe alternative? It depends on user habits
Cigarette smoking kills approximately 440,000 Americans each year, according to...
medicalxpress.com
Complications of tube insertion in ears not worse for kids with cleft lip/palate
Children with cleft lip and/or palate (CLP) have no worse...
medicalxpress.com
Work Smarter, Not Harder: The FOAMed Report
(MedPage Today) -- A regular update of emergency department must-reads...
medpagetoday.com
A window of time for better sleep
The only time I consider myself a “morning person” is...
scopeblog.stanford.edu
Team identifies possible bacterial drivers of inflammatory bowel diseases
Yale University researchers have identified a handful of bacterial culprits...
medicalxpress.com
The Benefits of Taking Time to Recharge
(MedPage Today) -- From his family's vacation home in New...
medpagetoday.com
New analysis of old HIV vaccines finds potentially protective immune response
Applying the benefit of hindsight, researchers at Duke Medicine have...
medicalxpress.com
 


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 +