Taste

• Gustatory (Taste ):Tongue with papillae
• TASTE RECEPTORS: taste buds
• TASTE BUDS is most are localized in the tongue
• TASTE BUDS is composed of many sensory gustatory cells that are encapsulated by supporting cells
• Papillae

  1. Circumvallate: found at posterior back part of tongue; contains most # of taste buds
• Papillae

  Fungiform: mushroom shape with lesser taste buds; between the filiform
• Papillae

  Foliate: sides of tongue ; more functional during adults
• Papillae

  Filiform: fingerlike, keratinized, most numerous, no taste buds
• Taste sites on the tongue:

  sweet- sugar, saccharine, some amino acids

  salt- metal ions (NaCl)

  bitter- alkaloids

  sour- hydrogen ions, acidity
• Termination of the gustatory pathway is at the area located in the opercular part of the post central gyrus ( Brodmann’s Area 43)
• taste bud- sensory structure that detect taste stimuli
• papilae- enlargements on the surface of the tongue
• taste pore- tiny opening
• tiny hair- hairlike process
• umami- savory
• taste sensation cranial nerves: 7 , 9 , 10