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cupula

British  
/ ˈkʌpjʊlə /

noun

  1. anatomy zoology a dome-shaped structure, esp the sensory structure within the semicircular canals of the ear

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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The hairs project into a gelatinous cap called the cupula and monitor angular acceleration and deceleration from rotation.

From Textbooks Jun. 9, 2022

But opening its doors and entering, one is overwhelmed by the brilliantly colored paintings that cover its walls, ceilings and cupula.

From Seattle Times Feb. 13, 2019

As the head rotates in a plane parallel to the semicircular canal, the fluid lags, deflecting the cupula in the direction opposite to the head movement.

From Textbooks Jun. 19, 2013

The stereocilia of these hair cells extend into the cupula, a membrane that attaches to the top of the ampulla.

From Textbooks Jun. 19, 2013

As one of the canals moves in an arc with the head, the internal fluid moves in the opposite direction, causing the cupula and stereocilia to bend.

From Textbooks Jun. 19, 2013

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