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Encyclopedia > Outer ear
Outer ear
External and middle ear, opened from the front. Right side.
The auricula. Lateral surface.
Gray's subject #229 1033
MeSH External+Ear

The outer ear is the external portion of the ear. Image File history File links Gray907. ... Image File history File links Gray904. ... Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... The ear is the sense organ that detects sounds. ...


Pinna, or auricle

The visible part is called the pinna and functions to collect and focus sound waves. Many mammals can move the pinna (with the auriculares muscles) in order to focus their hearing in a certain direction in much the same way that they can turn their eyes. Humans, unlike most other mammals, do not have this ability. Juzzah is a loser Boom, Headshot Bergamin and Gerald died The pinna (Latin for feather) is the visible part of the ear that resides outside of the head. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the production of milk in female mammary glands and by the presence of: hair, three middle ear bones used in hearing, and a neocortex region in... The muscles of the auricula. ... A human eye Eyes are organs of vision that detect light. ...


Ear canal, or external auditory meatus

From the pinna the sound pressure waves move into the ear canal, a simple tube running to the middle ear. This tube amplifies frequencies in the range 3 kHz to 12 kHz.Pina is the main part of the ear because auditoruy signals are direcely come on the pina. Pina collect the sound from the other sourses send to the outer ear up to ear drum.This is the main part of the aurical. Sound is a disturbance of mechanical energy that propagates through matter as a wave. ... A wave is a disturbance that propagates through space or spacetime, transferring energy and momentum and sometimes angular momentum. ... The ear canal (external auditory meatus, external acoustic meatus), is a tube running from the outer ear to the middle ear. ... The middle ear is the portion of the ear internal to the eardrum, and external to the oval window of the cochlea. ... A kilohertz (kHz) is a unit of frequency equal to 1,000 hertz (1,000 cycles per second). ...


  Results from FactBites:
 
Cosmetic Surgery Center: Outer Ear Surgery (1019 words)
Ear surgery, or otoplasty, is usually done to set prominent ears back closer to the head or to reduce the size of large ears.
Ears are almost fully grown by age four, and the earlier the surgery, the less teasing and ridicule the child will have to endure.
Ear surgery is usually performed as an outpatient procedure in a hospital, a doctor's office-based surgical facility, or a freestanding surgery center.
outer ear - Hutchinson encyclopedia article about outer ear (326 words)
The outer ear is a funnel that collects sound, directing it down a tube to the eardrum (tympanic membrane), which separates the outer and middle ear.
Vibrations of the inner ear membrane move fluid contained in the spiral-shaped cochlea, which vibrates hair cells that stimulate the auditory nerve connected to the brain.
Three fluid-filled canals of the inner ear detect changes of position; this mechanism, with other sensory inputs, is responsible for the sense of balance.
  More results at FactBites »

 
 

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