- published: 12 Jun 2013
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The cochlea /ˈkɒk.lɪə/ (Ancient Greek: κοχλίας, kōhlias, meaning spiral or snail shell) is the auditory portion of the inner ear. It is a spiral-shaped cavity in the bony labyrinth, in humans making 2.5 turns around its axis, the modiolus. A core component of the cochlea is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of the cochlea. The name is derived from the Latin word for snail shell, which in turn is from the Greek κοχλίας kokhlias ("snail, screw"), from κόχλος kokhlos ("spiral shell") in reference to its coiled shape; the cochlea is coiled in mammals with the exception of monotremes.
The cochlea (plural is cochleae) is a spiralled, hollow, conical chamber of bone, in which waves propagate from the base (near the middle ear and the oval window) to the apex (the top or center of the spiral). Rosenthal's canal or the spiral canal of the cochlea is a section of the bony labyrinth of the inner ear that is approximately 30 mm long and makes 2¾ turns about the modiolus. The cochlear structures include:
This animation provides a general overview of the anatomy of the cochlea. It was created using 3ds Max, Premier Pro, After Effects, Garage Band, and Sound Booth.
In my 2-Minute Neuroscience videos I simplistically explain neuroscience topics in 2 minutes or less. In this video, I discuss the cochlea. I describe the passage of sound waves through the ear, which leads to the depression of the oval window, a structure found in the wall of the cochlea. I cover the three main cavities in the cochlea: the scala vestibuli, scala media, and scala tympani. Then I describe how the movement of fluid in the cochlea causes movement of the basilar membrane, which activates hair cells in the organ of Corti. The hair cells transmit the auditory information to the vestibulocochlear nerve, which carries it to the brain to be processed. TRANSCRIPT: Welcome to 2 minute neuroscience, where I simplistically explain neuroscience topics in 2 minutes or less. In this ins...
This animation shows the various structures of the ear and the process of hearing.
This video was produced to help students of human anatomy at Modesto Junior College study our anatomical models.
Cochlear implant surgery at Thomas Jefferson University - by Gregory J. Artz M.D.
You may license this video royalty free by contacting us at http://www.javitz3d.com Many of us take for granted a very extraordinary ogan... our ears. To understand the ear, we need to understand what sound is. The speakers you are listening to right now are vibrating...flexing in and out causing a wave of pressure through the air The frequency of these waves, or the speed at which the sound creating surface moves back and forth affects the pitch of the sound. The level of air pressure in each wave is directly related to how loud the sound is. The outer part of our ear catches these waves. It faces forward and has a specially designed structure of curves helping us to determine the direction of sound, and emphasize frequencies used in human speech Now that the sound waves are caught, ...
This animation may be used, copied, and distributed, without modification and with the foregoing copyright notice included, for non-commercial scientific or educational purposes only; any other use requires the written permission of Howard Hughes Medical Institute (contact bricken@hhmi.org).
Chapter 13 Seeley’s Principles of Anatomy and Physiology (2nd edition 2012) A Courtesy of "Philip Tate"
The Cochlea Were the cochlea uncoiled it would be a continuous tube divided into three separate compartments-the scala media, the scala tympani and the scala vestibuli. Sound waves are transmitted in the scala vestibuli and reach the organ of Corti on the basilar membrane, where they stimulate hairlike receptors, whose tips are fixed in the tectorial membrane.
Melontar kerikil ke sungai
Dan mencinta kitaran air
Yang tak henti mencerminkan dirimu
Supaya terpadam kenanganmu
Namun tidak terluput biar seberkas pun
Sebaliknya wajahmu jadi sejuta ragam
Melamar mesra, mengusik jiwa
Menguris merintih membujuk kasih
Menjaring rindu mengintai waktu
Kala cinta belum terpisah
Kucuba merubah situasi
Dan berlari jauh dari situ
Masih juga kau bermain mesra di mata