Gustation (taste)

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6 Terms

1
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What does gustation (sense of taste) provide?

Information about the foods and liquids we consume

2
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Where can taste receptors be found?

  • Mainly on the superior surface of the tongue

  • Some located in pharynx and larynx

3
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What is the sensory structure that consist of taste (gustatory) receptors?

Taste buds

4
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Gustatory Receptors

The tongue consist of

Papillae consist of

Taste buds consist of

Structure of gustatory cell

Why short half life

  • What replaces it?

Tongue consist of: Papillae

Papillae consist of: Taste buds

Taste buds consist of: Gustatory cells

Structure of gustatory cell: Has slender microvilli that extends through taste pore into surrounding fluid

Why short have life: Because they are prone to damage

  • Replaced by: Basal cells

<p><strong><u>Tongue consist of:</u></strong> <strong><span style="color: red"><mark data-color="red">Papillae</mark></span></strong></p><p><strong><u>Papillae consist of:</u></strong> <strong><span style="color: red">Taste buds</span></strong></p><p><strong><u>Taste buds consist of:</u></strong> <strong><mark data-color="red">Gustatory cells</mark></strong></p><p><strong><u>Structure of gustatory cell:</u></strong> Has <strong><span style="color: red">slender microvilli</span> </strong>that <strong><span style="color: red">extends</span> </strong>through<span style="color: red"> </span><strong><span style="color: red">taste pore</span> </strong>into <strong><span style="color: red">surrounding fluid</span></strong></p><p><strong><u>Why short have life:</u></strong> Because they are <strong><span style="color: red">prone</span> </strong>to <strong><span style="color: red">damage</span></strong></p><ul><li><p><strong><u>Replaced by:</u></strong> <strong><span style="color: red">Basal cells</span></strong></p></li></ul>
5
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What are the 4 types of papillae

  • Filiform

    • Helps move object

  • Fungiform

    • Contains about 5 taste buds

  • Foliate

  • Vallate

<ul><li><p><strong><span style="color: purple">Filiform</span> </strong></p><ul><li><p>Helps <strong><mark data-color="purple">move</mark> </strong>object</p></li></ul></li><li><p><strong><span style="color: green">Fungiform</span> </strong></p><ul><li><p>Contains about <strong><mark data-color="green">5 taste buds</mark> </strong></p></li></ul></li><li><p><strong><span style="color: blue">Foliate</span> </strong></p></li><li><p><strong><span style="color: yellow">Vallate</span> </strong></p></li></ul>
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Taste Sensations

What are the 4 primary sensations

What are the 2 other sensations

What is the location of these sensations

What type of sensation sensitivity can be inherited and why

Which foods taste bitter

4 primary sensations: Sweet, salty, sour and bitter

2 other sensations:

  • Umami

    • Savoury

    • Receptor binds to amino acids

  • Water receptors

    • Demonstrated in human pharynx

    • Information sent to hypothalamus to manage thirst

Inherited type of sensation: Extreme sensitivity to bitter taste such as alkaloid foods

  • Why: This includes poisons so spitting out is a protective mechanism

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