Blood Circulation
Friday, July 16th, 2010A teacher was giving a lesson on the circulation of the
blood. Trying to make the matter clearer, she said,
“Now, class, if I stood on my head, the blood, as you
know, would run into it, and I would turn red in the face.”
“Yes,” the class said.
“Then why is it that while I am standing upright in the
ordinary position the blood doesn’t run into my feet?”
A little fellow shouted,
“Cause your feet ain’t empty.”
http://bit.ly/a8uKzb