2014 Sensory Physiology

Taste buds

  • taste receptors are on the 50-150 taste cells found within a taste bud

  • the apical part of the taste cell projects into the taste pore, which is in contact with saliva

  • tastants must dissolve in the saliva and mucus in order to enter the taste pore

  • the basal end of the taste cell forms a synapse with a primary sensory neuron (i.e., receptor → primary afferent)

  • each taste cell is sensitive to only type of tastant

  • taste cells are replaced ~ every 10 days

  • one persistent myth is the idea that different regions of the tongue respond to different tastants; it has been known for some time that taste cells containing receptors for all 5 tastants are found all over the surface of the tongue and throughout the oral cavity
Taste Bud


Email: Dr. Janet Fitzakerley | ©2014 University of Minnesota Medical School Duluth | Last modified: 4-feb-14 8:26 PM