Tag Archives: cells

Taste “map” of your tongue is a myth!

tngeFor years I have been teaching that there are various areas of your tongue that are sensitive to specific tastes: sweet, salty, bitter, sour ( and most recently umami which senses MSG).  As I was researching to once again teach the unit, I stumbled across numerous articles that basically said that everyone for years has accepted this theory of a “tongue map” without questioning the science behind it.  It turns out that research from as long ago as 1974  debunked the myth, but it continues to be taught and displayed in textbooks!

So, to those of you who could never quite understand why your taste buds didn’t fit the “test” with different solutions, you are vindicated!  Everyone IS ABLE to taste all types of tastes everywhere on the tongue, though some areas may have more receptors for specific types of tastes.  Then there is the whole issue of taste buds and whether or not you are a “super taster,” but that we will save for another time.

Here is an article from LiveScience magazine that cites some research, and is an easy read.

Keep on tasting!

 

 

Advertisements

Fetal cells live on in their mothers…..

This post goes out to my Biology students in particular, as we are currently studying about how cells are regulated in the body.  This article in Scientific American talks about a new study currently going on, in which cells were found in women that were distinctly not their own, but were in fact cells from their children!

“We all consider our bodies to be our own unique being, so the notion that we may harbor cells from other people in our bodies seems strange.”  Because these are embryonic cells, they are also stem cells, possessing the ability to differentiate into other cells in the body.

Read the rest of the article from Scientific American here.