Compare and contrast gustation and olfaction Proper Number of primary tastes or

Question

Compare and contrast gustation and olfaction Proper Number of primary tastes or odors Olfaction Gustation Supporting cells present or absent l cell present or absent Microvillus hairs containing receptors are present or absent The cell that differentiates into the receptor cell (supporting or basal cell) Life span of the receptor cell Requires that chemical being detected is dissolved in mucus yes or no Adaptation is complete or Gustation Name the 5 primary tastes: On which papillae are taste buds found: Which taste sensation has the lowest threshold of detection? Why? List the 3 cranial nerves involved in taste and identify which of the 3 serves most of the surface area the tongue: Where on l cortex does the perception of taste occur?

Explanation / Answer

a)olfacation:5 primary taste

b)Supporting cell present in both olfaction and gustation

1)the five primary tastes—bitter, salty, sour, sweet and umami.

2)Circumvallate papillae, located on the surface of the back part of the tongue, contain taste buds

4)The facial nerve innervates the anterior (front) two-thirds of the tongue and the glossopharyngeal nerve innervates that posterior (back) one-third part of the tongue. Another cranial nerve (the vagus nerve) carries taste information from the back part of the mouth.

5The primary gustatory cortex is a brain structure responsible for the perception of taste. It consists of two substructures: the anterior insula on the insular lobe and the frontal operculum on the inferior frontal gyrus of the frontal lobe.

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