About: Ampullary cupula

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The ampullary cupula, or cupula, is a structure in the vestibular system, providing the sense of spatial orientation. The cupula is located within the ampullae of each of the three semicircular canals. 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. When the head rotates, the endolymph filling the semicircular ducts initially lags behind due to inertia. As a result, the cupula is deflected opposite the direction of head movement. As the endolymph pushes the cupula, the stereocilia is bent as well, stimulating the hair cells within the crista ampullaris. After a short time o

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rdf:type	Thing yago:Abstraction100002137 yago:Anatomy106057539 yago:Biology106037666 yago:Cognition100023271 yago:Content105809192 yago:Discipline105996646 yago:KnowledgeDomain105999266 yago:LifeScience106037298 yago:Morphology106078327 yago:NaturalScience106000400 yago:PsychologicalFeature100023100 building yago:Science105999797 umbel-rc:AnimalBodyPart
rdfs:label	Ampullary cupula (en)
rdfs:comment	The ampullary cupula, or cupula, is a structure in the vestibular system, providing the sense of spatial orientation. The cupula is located within the ampullae of each of the three semicircular canals. 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. When the head rotates, the endolymph filling the semicircular ducts initially lags behind due to inertia. As a result, the cupula is deflected opposite the direction of head movement. As the endolymph pushes the cupula, the stereocilia is bent as well, stimulating the hair cells within the crista ampullaris. After a short time o (en)
foaf:depiction
dcterms:subject	Sensory organs Vestibular system
Wikipage page ID	4679294 (xsd:integer)
Wikipage revision ID	991114830 (xsd:integer)
Link from a Wikipage to another Wikipage	Sensory organs Vestibular system Endolymph Vertigo (medical) Vestibular system Crista ampullaris Hair cell Vestibulocochlear nerve Osseous ampullae Semicircular canal Kinocilia Spatial orientation
Link from a Wikipage to an external page	http://www.kumc.edu/instruction/medicine/anatomy/histoweb/eye_ear/ear04.htm http://www.vestibular.org/vestibular-disorders/balance/sensory-input.php%3E. https://web.archive.org/web/20070703152544/http:/education.vetmed.vt.edu/curriculum/VM8054/Labs/Lab11/Ear/EXAMPLES/Excrista.htm https://web.archive.org/web/20111126234002/http:/www.unmc.edu/physiology/Mann/index.html%3E. http://www.anatomyatlases.org/MicroscopicAnatomy/Section16/Plate16314.shtml
sameAs	Ampullary cupula Ampullary cupula Ampullary cupula Ampullary cupula
dbp:wikiPageUsesTemplate	dbt:Gray's dbt:Authority_control dbt:Citation_needed dbt:Portal_bar dbt:See dbt:Auditory_and_vestibular_systems
thumbnail	wiki-commons:Special:FilePath/Vestibular_system's_semicircular_canal-_a_cross-section.jpg?width=300
has abstract	The ampullary cupula, or cupula, is a structure in the vestibular system, providing the sense of spatial orientation. The cupula is located within the ampullae of each of the three semicircular canals. 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. When the head rotates, the endolymph filling the semicircular ducts initially lags behind due to inertia. As a result, the cupula is deflected opposite the direction of head movement. As the endolymph pushes the cupula, the stereocilia is bent as well, stimulating the hair cells within the crista ampullaris. After a short time of continual rotation however, the endolymph's acceleration normalizes with the rate of rotation of the semicircular ducts. As a result, the cupula returns to its resting position and the hair cells cease to be stimulated. This continues until the head stops rotating which simultaneously halts semicircular duct rotation. Due to inertia, however, the endolymph continues on. As the endolymph continues to move, the cupula is once again deflected resulting in the compensatory movements of the body when spun. In only the first situation, as fluid rushes by the cupula, the hair cells stimulated transmit the corresponding signal to the brain through the vestibulocochlear nerve (CN VIII). In the second one, there is no stimulation as the kinocilium can only be bent in one direction. In their natural orientation within the head, the cupulae are located on the medial aspect of the semicircular canals. In this orientation, the kinocilia rest on the posterior aspect of the cupula. (en)
gold:hypernym	Structure
prov:wasDerivedFrom	wikipedia-en:Ampullary_cupula?oldid=991114830&ns=0
page length (characters) of wiki page	4391 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Ampullary_cupula
is Link from a Wikipage to another Wikipage of	Epley maneuver Benign paroxysmal positional vertigo Vestibular nerve Semicircular canals Vestibular system Stereocilia (inner ear) Crista ampullaris Otolithic membrane Ampulla (disambiguation) Spins Cupula Ear Sense Short-term effects of alcohol consumption Sense of balance
is Wikipage disambiguates of	Ampulla (disambiguation) Cupula
is foaf:primaryTopic of	wikipedia-en:Ampullary_cupula

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