Sensory - Taste Development
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 | ||
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Senses Links: Introduction | placode | Hearing and Balance hearing | balance | vision | smell | taste | touch | Stage 22 | Category:Sensory |
Some Recent Findings
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Gustatory cranial sensory neurons
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: Embryonic origin of gustatory cranial sensory neurons.[5])
References
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Cite this page: Hill, M.A. (2024, May 4) 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