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The kinocilium can be identified by its apical position as well as its enlarged tip. [1] Together with stereocilia, the kinocilium regulates depolarization and hyperpolarization of the hair cell, which is a neuron that can generate action potentials. When the stereocilia and kinocilium move further apart, the cell hyperpolarizes.
The kinocilium is the only sensory aspect of the hair cell and is what causes hair cell polarization. The tips of these stereocilia and kinocilium are embedded in a gelatinous layer, which together with the statoconia form the otolithic membrane. [2] This membrane is weighted with calcium carbonate-protein granules called otoliths.
The macula of saccule lies in a nearly vertical position. It is a 2mm by 3mm patch of hair cells. Each hair cell of the macula contains 40 to 70 stereocilia and one true cilia, called a kinocilium. A gelatinous cover called the otolithic membrane envelops the tips of the stereocilia and kinocilium.
Each hair cell of a macula has 40 to 70 stereocilia and one true cilium called a kinocilium. The stereocilia are oriented by the striola, a curved ridge that runs through the middle of the macula; in the saccule they are oriented away from the striola [2] The tips of the stereocilia and kinocilium are embedded in a gelatinous otolithic membrane ...
Bending the stereocilia away from the kinocilium hyperpolarizes the cell and results in a decrease in afferent activity. In the semicircular canals, the hair cells are found in the crista ampullaris , and the stereocilia protrude into the ampullary cupula .
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Part of the crista ampullaris, the cupula has embedded within it hair cells that have several stereocilia associated with each kinocilium. The cupula itself is the gelatinous component of the crista ampullaris that extends from the crista to the roof of the ampullae.
While the cats in the above video look as if they are kneading biscuits, they are actually displaying a common feline behavior called kneading. Lots of cats do it, and some owners love it while ...