Unit-7 On-line Lab - The Sensory System - Anatomy and Physiology I Lab BIOL 220L.ppt

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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
16-2Special SensesHearingSmellSightTasteTouchBalancing
16-3Sense OrgansEyesEarsTongue
16-4Physiology of TasteMolecules must dissolve in saliva5 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 appearancemouthfeel - detected by lingual nerve in papillaeHot pepper stimulates free nerve endings(pain)
16-5Chemical Sense - TasteGustation- sensation of tasteresults from action of chemicals on tastebudsLingual papillaefiliform(no taste buds)important for texturefoliate(no taste buds)fungiformat tips and sides of tonguevallate(circumvallate)at rear of tonguecontains 1/2 of taste buds

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Term
Winter
Professor
NoProfessor
Tags
Physiology, Anatomy, Human Anatomy, Physiology of Taste

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