Sensory - Taste Development: Difference between revisions
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Embryonic origin of gustatory cranial sensory neurons.<ref><pubmed>17826760</pubmed></ref> | Embryonic origin of gustatory cranial sensory neurons.<ref><pubmed>17826760</pubmed></ref> | ||
* Cranial nerves VII, IX and X provide both gustatory (taste) and non-gustatory (touch, pain, temperature) innervation to the oral cavity of vertebrates. | * Cranial nerves VII, IX and X have dual embryonic origins and provide both gustatory (taste) and non-gustatory (touch, pain, temperature) sensory innervation to the oral cavity of vertebrates. | ||
Gustatory Neurons | |||
* epibranchial placodes | * originate from epibranchial placodes | ||
* cranial neural crest | * innervate taste buds | ||
* project centrally to the rostral nucleus of the solitary tract (NTS) | |||
General Epithelial Innervation of the oral cavity | |||
* originate from cranial neural crest | |||
* innervation to the oropharynx | |||
* project to non-gustatory hindbrain regions (spinal trigeminal nucleus) | |||
(text based on paper abstract) | (text based on paper abstract) |
Revision as of 00:07, 2 September 2010
Introduction
These notes introduce the development of the sense of taste which can divided into five basic tastes: bitter, salty, sweet, umami (savoury) and sour. Current research appears to have displaced the historic concept of a tongue "map".
A study in rat suggests that neonatal changes in circumvallate papillae may result in postnatal changes in "taste".[3] In frogs, a large taste disc (TD) is the largest vertebrate gustatory organ. Postnatally, the sense of taste is also closely related to the sense of smell.
Taste Links: Introduction | Student project | Tongue Development | Category:Taste | ||
|
Senses Links: Introduction | placode | Hearing and Balance hearing | balance | vision | smell | taste | touch | Stage 22 | Category:Sensory |
Some Recent Findings
- [4]"Mammalian taste buds have properties of both epithelial and neuronal cells, and are thus developmentally intriguing. Taste buds differentiate at birth within epithelial appendages, termed taste papillae, which arise at mid-gestation as epithelial thickenings or placodes. ...we demonstrate that Shh-expressing embryonic taste placodes are taste bud progenitors, which give rise to at least two different adult taste cell types, but do not contribute to taste papillae. Strikingly, placodally descendant taste cells disappear early in adult life."
Gustatory cranial sensory neurons
Embryonic origin of gustatory cranial sensory neurons.[5]
- Cranial nerves VII, IX and X have dual embryonic origins and provide both gustatory (taste) and non-gustatory (touch, pain, temperature) sensory innervation to the oral cavity of vertebrates.
Gustatory Neurons
- originate from epibranchial placodes
- innervate taste buds
- project centrally to the rostral nucleus of the solitary tract (NTS)
General Epithelial Innervation of the oral cavity
- originate from cranial neural crest
- innervation to the oropharynx
- project to non-gustatory hindbrain regions (spinal trigeminal nucleus)
(text based on paper abstract)
References
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- Taste System Development - All (320) Review (64) Free Full Text (78)
- Tongue Development - All (2804) Review (258) Free Full Text (519)
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Cite this page: Hill, M.A. (2024, June 20) Embryology Sensory - Taste Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Sensory_-_Taste_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G