Cochlea, Tectorial Membrane, Sem #3
by Oliver Meckes EYE OF SCIENCE
Title
Cochlea, Tectorial Membrane, Sem #3
Artist
Oliver Meckes EYE OF SCIENCE
Medium
Photograph - Photograph
Description
The tectorial membrane usually lies on top of the hair cells' stereovilli. Due to shrinkage in preparation it often releases, as seen here. On the surface of the tectorial membrane, hook-shaped imprints of stereocilia are clearly visible. The organ of Corti lies in the entire length of the cochlea. Close to the oval window the hair cells of the organ of Corti are sensitive to high tones, while towards the tip of the cochlea they are sensitive to lower tones. The tectorial membrane is connected to the tips of the hair cells’ stereovilli, which causes these stereovilli to shift and stretch when there is sound pressure. These distractions are converted into electrical impulses that are sent to the brain. Scanning electron micrograph, magnification 2800x (at 15 cm image width).
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May 19th, 2021
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