High School Biology Musical

You know, looking this over, it occurs to me that I may be confusing this bit of biology with something else I learned about in the 80s...

Also, I appear to have had a problem getting the date right.  Which, coincidentally, also harkens back to my high school days.

Now You See Itch...

Further anatomical note:  itches such as those pictured here, travel in clusters just below the surface of the skin.  They are basically tiny balloons that burst when you scratch them.

Biology in my head is much more fun than the stuff I learned in school.