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19 July, 11:16

How Can We Taste and Smell? Place in order the steps involved for flavors on the tongue to create a perceptio in the brain. 1) Taste receptors are stimulated 2) Chemical substances in food dissolve in saliva 3) Signals are sent to the thalamus by the facial nerve 4) The gustatory cortex processes taste perception

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  1. 19 July, 11:18
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    2) Chemical substances in food dissolve in saliva

    Substances form the food need to be dissolved and and a little bit degraded (by teeth and some of the enzymes in the mouth) in order to react chemically with taste receptors

    1) Taste receptors are stimulated

    Taste receptors are located in the oral cavity, usually on the tongue but also pharynx and the epiglottis (receptors are placed on taste buds within papilla on tongue)

    3) Signals are sent to the thalamus by the facial nerve

    From the ventral posterior medial nucleus in thalamus sensation is projected to the gustatory cortex

    4) The gustatory cortex processes taste perception

    The sensation of taste includes: sweetness, sourness, saltiness, bitterness, and umami
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