Before the advent of computer applications like PowerPoint or Keynote, lecture illustrations were often drawn or printed on transparent acetate sheets. These were then placed on an overhead projector and shown on a screen. When I taught anatomy and physiology in those days, there was one image I always used. That illustration showed the textbook approach taken to the subject of anatomy and physiology.
The illustration got the nickname ‘OHT1’. That meant ‘OverHead Transparency #1’. It was not necessarily the first transparency shown. (The first gave my name and contact details.) However, that transparency was of foremost importance. I used it to start asking questions.
I am posting it here without further commentary. I will return to it at a later stage. For now, it is something for the visitor to look at and ponder over.
(From:
The Coloring Review Guide to Human Anatomy
By McMurtrie, WH, Krall Rikel, J & Rikel, JE.
Wm. C. Brown Co Publishers 1989)