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Related Concept Videos

Taste Buds and Receptors01:20

Taste Buds and Receptors

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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
5.4K
Gustation01:43

Gustation

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Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
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The Physiology of Taste01:24

The Physiology of Taste

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The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
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The Tongue and Taste Buds00:49

The Tongue and Taste Buds

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The surface of the tongue is covered with various small bumps called papillae, which either distribute what has been ingested (filiform papillae) or contain the sensory taste (or gustatory) receptor cells (fungiform, circumvallate, and foliate papillae). Embedded within each taste-related papilla are the taste buds—clusters of 30 to 100 gustatory receptor cells.
41.3K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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Olfaction01:25

Olfaction

49.0K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
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Related Experiment Video

Updated: Feb 18, 2026

Technique to Collect Fungiform Taste Papillae from Human Tongue
09:39

Technique to Collect Fungiform Taste Papillae from Human Tongue

Published on: September 18, 2010

30.3K

The Insula and Taste Learning.

Adonis Yiannakas1, Kobi Rosenblum1,2

  • 1Sagol Department of Neuroscience, University of Haifa, Haifa, Israel.

Frontiers in Molecular Neuroscience
|November 23, 2017
PubMed
Summary

Taste learning involves the insular cortex (IC) and other brain regions, utilizing specific neurotransmitters and molecular pathways for memory formation. This process is crucial for evaluating food safety and nutritional value.

Keywords:
ERK-MAPKimmediate early genesinsulainsular cortextastetaste circuittranslation regulation

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Taste Exam: A Brief and Validated Test
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Taste Exam: A Brief and Validated Test

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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds
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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds

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Related Experiment Videos

Last Updated: Feb 18, 2026

Technique to Collect Fungiform Taste Papillae from Human Tongue
09:39

Technique to Collect Fungiform Taste Papillae from Human Tongue

Published on: September 18, 2010

30.3K
Taste Exam: A Brief and Validated Test
07:10

Taste Exam: A Brief and Validated Test

Published on: August 17, 2018

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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds
07:40

Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds

Published on: February 11, 2021

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Area of Science:

  • Neuroscience
  • Sensory Biology
  • Molecular Biology

Background:

  • Taste perception is vital for assessing food safety and nutritional value.
  • Taste conditioning in rodents demonstrates robust associative learning, often linked to the insular cortex (IC).

Purpose of the Study:

  • To review neurotransmission, molecular signaling, and genetic markers in taste learning.
  • To highlight the role of the insular cortex (IC) in taste memory formation and motivated behaviors.

Main Methods:

  • Literature review of studies on taste learning, synaptic plasticity, and molecular pathways.
  • Focus on research implicating the insular cortex (IC), amygdala, and medial prefrontal cortex.
  • Analysis of neurotransmitter involvement (dopaminergic, GABAergic, glutamatergic, muscarinic) and downstream signaling molecules.

Main Results:

  • Taste memory formation depends on protein synthesis in the IC and involves signaling cascades for synaptic plasticity.
  • Taste learning requires differential neurotransmission and activation of kinases, transcription factors, and immediate early genes.
  • The IC is implicated in processing sensory information and forming internal representations guiding motivated behaviors.

Conclusions:

  • The insular cortex (IC) plays a critical role in taste learning and memory.
  • Molecular signaling pathways and genetic markers are key regulators of taste learning phases.
  • The IC's function extends to cognitive disorders, influencing sensory interception, encoding, and motivated behaviors.