Taste in the Mouth, Gut, and Airways

The tongue may be the epicenter of taste sensation, but taste receptors are scattered throughout the digestive and respiratory tracts.

By | December 1, 2011

Infographic: Taste in the Mouth, Gut, and Airways
View the three full size graphics PDF
ANDREW SWIFT

Taste-bud receptors, primarily on the tongue, sense the qualities of salty, sour, bitter, sweet, and umami (the taste of glutamate). While sweet, umami, and salty foods provide pleasurable sensations that drive the intake of carbohydrates, amino acids, and sodium, the tastes of bitter and sour inhibit intake of potentially toxic substances and strong acids.

In contrast to taste receptors in the mouth, T1R and T2R receptors in the gut do not induce sensations of taste, but rather initiate molecular pathways that help guide the digestion or rejection of food substances traveling through the intestines. The underlying pathways, however, have many similarities. Scientists have also recently identified the existence of taste p­athways in human airway cells, where they likely mediate defensive responses to inhaled foreign and potentially toxic substances.

Read the full story.

Add a Comment

Avatar of: You

You

Processing...
Processing...

Sign In with your LabX Media Group Passport to leave a comment

Not a member? Register Now!

LabX Media Group Passport Logo

Popular Now

  1. Gut Microbes Linked to Neurodegenerative Disease
  2. Top 10 Innovations 2016
    Features Top 10 Innovations 2016

    This year’s list of winners celebrates both large leaps and small (but important) steps in life science technology.

  3. Opinion: WHO’s Silence on Cannabis
  4. Image of the Day: Parting Ways
    Image of the Day Image of the Day: Parting Ways

    The Allen Institute for Cell Science releases the first public collection of human induced pluripotent stem cells that have been fluorescently tagged using CRISPR.

Rockland