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Human Anatomy andPhysiology I LabThe SensorySystem________________________Joseph I. Orban, Ph.D.Distinguished Professor andDirector of Biomedical Research DevelopmentSouthern University at Shreveport, Louisiana
16-4Physiology of Taste•Molecules must dissolve in saliva•5 primary sensations - throughout tongue1.Sweet- concentrated on tip2.Salty- lateral margins3.Sour- lateral margins4.Bitter- posterior5.Umami- taste of amino acidsInfluenced by food texture, aroma,temperature, and appearance–mouthfeel - detected by lingual nerve in papillae•Hot pepper stimulates free nerve endings(pain)
16-5Chemical Sense - Taste•Gustation- sensation of taste–results from action of chemicals on tastebuds•Lingual papillae–filiform(no taste buds)•important for texture–foliate(no taste buds)–fungiform•at tips and sides of tongue–vallate(circumvallate)•at rear of tongue•contains 1/2 of taste buds