Tag Archives: anatomy

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!

 

 

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A Heart Surgeon Speaks Out

Despite decades of telling people that eating a low fat diet and substituting polyunsaturated oils (such as corn or safflower oil) for saturated fats (like butter) so that their risk of heart disease will be less, doctors have seen a rise in heart disease instead of a drop.  “Statistics from the American Heart Association show that 75 million Americans currently suffer from heart disease, 20 million have diabetes and 57 million have pre-diabetes. These disorders are affecting younger and younger people in greater numbers every year. ” (see article link)

Dr. Dwight Lundell has left his surgery practice to focus on nutrition treatment for heart disease based on  “The discovery a few years ago that inflammation in the artery wall is the real cause of heart disease is slowly leading to a paradigm shift in how heart disease and other chronic ailments will be treated.”  The inflammation is actually being caused by the low fat diet that we have been encouraged to embrace over the last 50 years.

This very interesting (and easily understood) article can be found here.  Food for thought.

 

Learning Styles – What’s Yours?

For years now, first as a mom homeschooling my own kids and now as a classroom teacher, I have been told that if I really want our kids to learn well, I/we should teach to their particular learning style.  It was fun to go through some of the workshops and figure out what each of our own styles were by taking various surveys like this   or this .  Although I think it is  a great idea to teach a topic in a number of different formats to get the message across, I have often wondered how successful the efforts have been for individual students.

In preparing to teach a unit on the brain in my anatomy classes, I ran across an article that addressed this issue of learning styles.  The article intrigued me because the author suggested that learning styles was not much more than a myth.  A MYTH! That got my attention.  The author is a neuroscientist who has written a book about myths about the brain.  Here is the link in wired science to this article.  I hope you enjoy the read!

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.