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Tongue, taste buds


Image courtesy of Anthony Huang

Notes

Taste bud functioning remains a topic for research. This diagram illustrates four cell types within a single taste bud, as distinguished by ultrastructural features, patterns of gene expression, and functions. Types I, II, and III taste cells are also classified as:

Glial-like cells (type I, gray in diagram).
Receptor cells (type II, yellow in diagram, associated with nerve endings but without classically-recognizable synapses).
Presynaptic cells (type III, blue in diagram).

Colored pink in the diagram are basal cells (B).

Green color indicates nerve fibers.

Non-sensory cells of the tongue's stratified squamous epithelium (E) are not colored in this diagram.

For more on tastebuds, see Chaudhari & Roper (2010) Journal of Cell Biology 190:285-296, doi: 10.1083/jcb.201003144


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Comments and questions: dgking@siu.edu

SIUC / School of Medicine / Anatomy / David King

http://www.siumed.edu/~dking2/erg/Huang-tastebud.htm
Last updated:  1 October 2012 / dgk