Plate 16.299 Taste Bud
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Jr., Ph.D.
Peer Review Status: Externally Peer Reviewed
Human, Zenker's fluid,
phosphotungstic acid hematoxylin stain, 612 x.
Taste buds are located in the tongue epithelium of vallate (circumvallate) papillae, and occasionally in the fungiform papillae and in the surface epithelium around them. A few taste buds are also present in the palate and epiglottis.
Trench: Surrounds vallate papillae. Covered by non-keratinized stratified squamous epithelium.
Taste bud in stratified squamous epithelium: Barrel-shaped. Extends from the basement membrane to the free surface of the stratified squamous epithelium covering the papilla. Taste buds are the receptor organs of taste.
Taste pore: The opening of the taste canal at the surface of the epithelium.
Neuroepithelial and supporting cells: The two types of cells are packed within the concavity of the taste bud. The neuroepithelial cells are slender, dense, and spindle-shaped. They constitute the taste receptor cells. Supporting cells or sustentacular cells are stouter and lighter.
Lamina propria: Connective tissue core of the papilla.
See also Plate 179.
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